370. people have taken an interest in this plane and where it could be. >> and the questions are coming in by the hundreds. thanks, nick valencia, for following this story on the web. this is cnn breaking news. >> you are in cnn newsroom. we are attacking two very important stories today, that the world is watching. a controversial vote today pits russia against much of the world. we have early results from crimea's referendum on possibly joining russia. crimea's leaders say crimea is going home to russia. world leaders say not so fast. president obama and russia's president putin talked today about the tense situation in the ukraine. plus, we are tracking every angle of the mysterious disappearance of flight 370 and there are new clues emerging. right now, 25 nations are searching for the missing plane and coming up short so far. the airliner disappeared some ten days ago, triggering the

aviation mystery that's baffled the world. here are the latest developments as we have them. pakistan says no trace of the missing plane ever showed up on its radar systems. and pakistan says the plane would have been treated as if it was a threat if it did show up on radar. right now, police are examining a flight simulator taken from the pilot's home. harsh new scrutiny is bearing down on the pilot and the co-pilot. plus, the search for the missing jet airliner is getting even bigger. now authorities are scouring ocean and land. you will hear why some believe the plane may have landed before its last satellite contact. we are bringing in all our experts to track the unsolved mystery of malaysia flight 370. but first, as daylight breaks in what what sha, it's another day without questions. as the -- are the tloauthoritie getting any more details after searching the pilot's home and

searching the flight simulate their the captain of the plane had in his home? >> well, pretty much as for this entire investigation so far, facts are few and far between on the ground here. we don't know officially what was on that simulator. it was taken in by police from the pilot's home yesterday. so they have had it for a good 24 hours. there's a story being quoted on reuters saying that there is a -- a program which tells you how to fly through different type of weather conditions. but should point out that's not uncommon on a flight simulator. obviously people who use them learning all the different sorts of conditions. so the investigation is though very, very focused at the moment on the pilots and the co-pilot. and that's really after, "a," the prime minister yesterday said the plane was deliberate deliberately -- the flight was deliberately disrupted and the communication systems, the

communication systems, the transponders were both deliberately turned off. on top of that, now with the time line, it shows that the pilot or whoever was in the cockpit speaking to ground control at the time, that line all right, good night came after the transponders, the acar system was switched off. it suggests what ever was happening, it was in play when that final statement came from the plane. good night, all right. now, this investigation isn't just on the two. there's no presumption of guilt here. there is -- this is a solid investigation looking at eliminating suspects if you like. that includes the other 227 passengers and ten other crew members on the flight, jim. so they have to get information from 15 other countries as well on some of these passengers. so not expecting any early developments in passengers and who may be hiding what.

>> well, i'm glad you made that point because they are checking out every eventuality, but they don't have hard evidence that the pilots were involved. but someone who could fly the plane well would have to be involved and the pilots were in the cockpits based on last communication. the search was huge. it was looking in the wrong place when it started, the first several days east of the peninsu peninsula. how much did that hamper the search today? >> well, it must have been a significant problem to be searching, basically so for eight days, the real search into where we know or at least have a good understanding of where the plane may have gone, those areas weren't being searched for eight days to give you an example, the indonesian, the deputy ambassador to malaysia here has

told the local reporters, we have been sitting in indonesia which is only a couple of hundred miles away from where we are at the moment, for eight days because we were told that the primary search area was in the south china sea. it may have flown across the air space and then into the indian ocean. so that is damaging and it makes the task of investigators even harder. just listen to what the transport minister, the defense minister, is the same person, what he has to say about the search. >> the operation has entered a new phase. the search was already a highly complex multinational effort and is now becoming even more difficult. the search area has been significantly expanded and the nature of the search has changed. from focusing mainly on the sea now we're looking at large

tracts of land, as well as deep and remote oceans. >> and jim, this search is now looking at some of the deepest places on the planet. under the ocean. plus some of the highest places. the himalayas. >> by land and by sea and some pretty big chunks of land and sea. thanks very much to andrew stephens. live for us in kuala lumpur. joining me now to discuss these developments, we have arthur rosenberg, aviation lawyer, engineer and pilot and a professor of aeronautics at m.i.t. and a former director -- assistant director of the fbi. john, i wonder if i could start with you. we have a lot of new information over the last 24 hours about the potential of a pilot's involvement in this. that it was a deliberate act. that it required turning off systems. radar indications of a steep ascent and decent. and flying through radar zones to avoid radar. that requires a level of skill. i wonder with what you know,

would that have to be a professional pilot who could do something like that or could someone learn up in effect to control the plane in such a way? i mean, we saw in 9/11 you had nonprofessional pilots fly that plane to great damage. could a nonpilot fly this path they're looking into this? >> i think with someone who had a pretty good knowledge of the systems. just turning off the acar systems itself is not an easy thing. it's kind of like resetting some setting in your computer. you have to know which pages to go to. and the fact that was done before the last -- the last sign-off, whoever answered that last sign-off in indication knew it was normal terminology. so it was a pilot or someone familiar with the procedures. >> arthur, if i could go to you now as well. we have talked about the flight simulator being taken in. that struck a lot of people when that first video of the pilot --

he was on the web talking about something completely different. i think home repair and behind him was the flight simulator. you have investigated a lot of crashes. how significant of a clue is that to you? >> well, the flight simulator could be an innocuous thing, he's a pilot, or it could be an effective tool for learning certain precise skills. what do we know? in this case the plane took off around 12:30 from kuala lumpur. it was en route for 45 minutes. we know now from a variety of sources that the transponder was turned off, the plane became invisible to radar. and the acar system before that was turned off, and then the next communication we have is all right, good night. now, we don't have to get into the communication whether it was proper or improper. we know that the plane turned around and we knew that the

plane flew a strategic route back over malaysia and evaded with -- evaded military radar and precluded the malaysian air force from intercepting. that simulator could have been the tool that taught the pilot what to do and to become very proficient. >> and to look for signs of that now on the simulator. tom, if i could come to you. 239 people on board that flight. how do investigators prioritize as they look through every one of them and then begin to narrow down the likely candidates for involved in this? >> first of all, jim, they try to verify that the identifications used to obtain the tickets is accurate. you know, obviously with the two stolen iranian passports that information was inaccurate. when they went to the home of the one italian gentleman, he said, hey, i'm alive and well, someone stole my passport a year

ago in thailand. you have the other travel documents that may not have been stolen, but if you had somebody using counterfeit documents with phony addresses, that would be really hard to figure out who was -- who exactly was that person that got on the plane if more than one person got on the plane. another question to look at is all of the ground crew and the catering service and the housekeeping service that cleans the airplane and, you know, you would have in addition to the passengers and crew, you would have hundreds of other people that have a hand in touching that aircraft or loading what goes on the aircraft including food and luggage and gasoline. or fuel i should say. so you know, there's so many people to look at and so many ways that you could look at them. they provide all that information to the fbi who have been involved in the case from the beginning. that comes back to washington and the various databases here in the united states. but that doesn't help with

people that maybe never came here or whose names never come up. you have individuals who are nationals from 14 other countries. so those countries have to look at the backgrounds on their people. it's a massive undertaking to try to identify every person and not to mention one last thing that hasn't been brought up. >> tell you what, tom, hold that thought. because we are going to come back after the break. but you make a great point there, as the search area expands you have the investigation expanding the number of people who could have touched that plane. not just the people on the plane, but maintenance crews, luggage handlers, a great point. we'll get to more after this break. the youngest is just 2. the oldest is 76 years old. 239 passengers were on board flight 370. next, why their families are starting to believe that no news could be good news. right after this.

239. amid the void of information on their fate, it seems the

passengers and crew of malaysia airlines flight 370 have been reduced to a number. david is joining us from beijing and he's been interacting with the families over the past ten days. how are they doing, how are they managing through all of this? >> well, it's extremely challenging and difficult for them. with all of the information coming out over these days and different conflicting accounts of what happened, it certainly is traumatizing for the families of those passengers. you know, the one interesting thing now, jim, is that with those two arcs way up to the north and way down to south there, though the anger is boiling over at the airlines from these families, here in beijing in particular, the hope is also there for them. many people i have spoken to se seem convinced that this plane was hijacked and that it landed somewhere and then perhaps their family members are okay.

and that goes for several different nationalities i have spoken to, not just chinese, jim. >> david, we have seen some finger pointing, some anger from china, particularly driven by those emotions of the family members. more than 150 people on the plane that's been directed at malaysia and also the u.s. the u.s. is talked about as an intelligent superpower, why isn't it tracking where this plane is? where is that coming from? why point the finger at the u.s. as well as malaysia? >> well, it's a good point. i think malaysia is an easier one to answer, because china hasn't had much love lost with malaysia over the years. they're kind of dependent on malaysia to lead this investigation like everyone else. when you have the family members in beijing who have real ties of course to this plane and this mystery, china wants to look like it's doing something about it. even though it continue -- can't really show it's leading the

investigation. on the u.s. side, it's more intriguing in a way because china has this enormous military budget. second largest in the world. wants to be seen as a growing superpower in the world, but it doesn't have nearly the intelligence capabilities of the u.s. so many analysts i have spoken to say, you know, the finger pointing at the u.s. is a to show that, you know, china can't do its own job to protect its citizens or investigate what happened to its citizens as the same degree as the united states, they'll point the finger at the u.s. for not doing enough. so there's a lot of geopolitics here and very awkward and angry scenes here in beijing with the families. this is potentially going to become very messy indeed for the countries involved. particularly china and malaysia as this drags on and we try and unravel this mystery. >> no question. it also raises the question, did chinese radar out there on the

northern arc of this potential path, did it miss the plane too? thanks very much to david mckenzie, live in beijing. we'll go back to our meteorologist chad myers, joining us. no one knows the satellites better. can you give us a perspective now as we look at that search area, how big is it, what can we compare it to? just the task at hand now for all those ships and planes involved. >> if you take just the line -- i'll show you that arc in a second. the two arcs and you say 100 miles either side that's 1 million acres. that's texas, california and mexico added together. why we have that problem, gps likes to work on three or more satellites. you have got three pings here. one, two, if you're in your car, the car would say you're right there because all of these satellites cross right there. that's the only place you could be. that satellite sees you in this ring. this satellite sees you in this ring and this one in this.

the only place they cross is right there. well, we don't have that. we only have in fact one satellite here. so we have a circle. we have the one circle and nothing else crossing that circle. so as the satellite found this ping at 8:11 a.m. the day the plane disappeared, this is what we have. this is where the plane right now could be. it's like having one ping, one ring, one satellite on your gps. you're not going to know where you are. the gps in your car won't even work. let's start whittling it down. we whittle it down because this is too far. the plane couldn't get there in time. it wasn't enough speed and likely not enough gas or fuel for the plane to actually get that far. and we also whittled down this. we whittle down this area right here because the government says you know what, we have really great radar coverage right here. we would have seen that. so all of a sudden, we have this arc and we have this arc. big arc. a million square miles, just 100

miles on both sides of the line, to search that area and to search this. alaska, canada and california together. that's only 100 miles. now, this plane could have flown on for a while after 8:11 a.m., so you may have to stretch that to 200 or 300 miles and then you do the multiplication yourself. one more satellite ping off of a different satellite would have made all the difference because once three cross, you know exactly where that plane is and we do not have that. and i'm not sure we're going to get that at all. this is going to be a long, arduous search i'm afraid, jim. >> yeah. one small clue and they need more clues. you have been tracking some of the ship traffic in that area. particularly down in the seven part of the arc in the indian ocean. is that a help to the search because you have a lot of commercial ships. >> that's right. someone is on watch, look for debris. we don't have just one destroyer out there. all of this commercial traffic

as well. there's banda acy down here. and they're helping out as well. >> you add the more than 50 ships and planes from the 11 countries taking part in the search. thanks so much to chad meyers in atlanta. this search for a missing air liner is changing gears to include land and ocean as we said. malaysia is asking more countries for sensitive information. we'll break down the tricky politics behind the desperate search for flight 370. you do yoe from anywhere thing, we'll be here at lifelock doing our thing: watching out for your identity, data breach or not. get lifelock protection and live life free.

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the search for missing malaysia airline flight 370 is taking a dramatic twist to cover both ocean and land. nations including afghanistan, pakistan and australia are being asked for any information they can provide.

the boeing 777 jet disappeared ten days ago and no new traces have shown up. joining me now to discuss, john hansman from m.i.t. as well as a former fbi assistant director. tom, if i can go to you first, when we last spoke a few moments ago, you were bringing up an important point we haven't heard on the air before. as they check the passengers on board this plane, as well as others involved with maintenance on the plane, et cetera, against u.s. terror database, that would only touch people who travelled to the u.s., is that right? there could be people involved with this plane who would not be on that list? >> yeah, that's possible, jim. the one other category i was trying to add was the idea that somebody could have scaled the fence at the airport and gotten to that aircraft from the ground

and posed as a mechanic or some other person. we had an aircraft land three weeks at dulles. it was having trouble with its landing gear. the reason being when the engineers looked up in there, they found a dead body. someone had stowed away and ridden on the plane, froze to death when it was at a high altitude. now, there had been other flights where individuals posing as a mechanic got on the aircraft and were able to hide, you know, find one of these -- you know, the lower compartments where they have equipment. and actually ride on that plane. which means that that person even if they didn't stay on the plane could introduce any form of contraband, explosives, firearms, flammable material that would be waiting for another partner to get on the plane and make use of it. in other words, all passengers could clear through the magnetometers and the search of the hand carry-on luggage knowing when they get on the plane there's weapons waiting for them on the flight. so at a later time, they could take over. there's a number of other possibilities that could involve

individuals whose name won't show up on any list whatsoever. >> a good point to make. because we know that the u.s. official is focusing on the pilots but they're not the only individuals who could have done something like this. john, there's another possibility. we live in an age of cyber attacks. they could happen remotely. they could happen by wirelessly. is a cyber attack on a plane system at all conceivable to take over the plane or to somehow control it or disable systems from afar? is that a plausible possibility? >> there's no -- the way these air planes are designed, there's no way to -- from the outside get into the systems in remotely controlled airplane. it may be possible you could interfere with the systems, put a bug in there so some component would fail. but i can't see anything that would cause the sequence of events we have seen. i don't think that's any type of external cyber attack. >> okay. fair point.

tom, i wonder if i could ask you, we're getting questions in via twitter. this one comes in from t.j. johnson. and he asks about this ascent that the radar data showed, the 45,000 feet. assuming 45,000 feet is accur e accurate, could this have been done to incapacitate the passengers and crew? it brings up a number of possibilities. is that something you can find conceivable, a kind of path that investigators would be looking at now? >> jim, i have had the pleasure of meeting about 50 aviation experts in this greenroom waiting to gone the air this week. asked that question to many of them, they don't think that would work because they weren't at this at today long enough and others said that the drop indicated by the data of going from 45,000 feet to 23,000 feet in a minute, the plane couldn't do it. that the wings would be ripped

off from the g-force and the plane wouldn't be able to sustain that kind of a supersonic drop in altitude. so i don't know. i'm not the aviation expert, but i have talked to many this week to try to find out myself if that's possible. >> john, if i could ask you one more question before we let you go. this idea of landing the plane somewhere, hiding it for later use, this sort of thing. is that something that would be possible in light of the world that we live in today where there are satellites all over the place looking down and trying to take pictures of exactly those things for military or civilian use? is that a plausible possibility in light of the fact that malaysia authorities said that last ping came from the ground, as opposed to in the air. >> it would be tough. the shortest runway you could get this plane on is 5,000 or 6,000 feet long. you'd need a long runway and

then a hangar to hide it. there aren't that many hangars in highly populated areas. you'd have to do it in a way that people wouldn't have noticed it. this is the biggest mystery in the world. if that happened, it would be hard to see how that secret would be there. i think it's unlikely. but it's theoretically possible if it could have been hidden. >> well, john and tom, great to have you on, because there are so many theories, so many hypotheticals out there. good to have your help, possibly eliminating some of them. less plausible than others. we can imagine this is what the investigators are going through as well. most airline experts fall into one of two camps. either somebody flew that 777 away somewhere or it crashed. i talk to one person who says, no, no crash. why he's so certain, coming up next. yes! not just a start up.

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we never imagined a week ago that a commercial airliner would still be missing without a trace, but that's where we stand amazingly today. it's an enormous task to search this much of the planet with urgency for something as relatively small as a passenger jet. airlines, ships and satellites representing 25 countries are now looking for it. considering every plausible theory about what happened to that malaysia airlines 777 and to its crew and the passengers. the united states navy is helping to search. american authorities are putting the most weight on the scenario that the plane crashed into the ocean outside of the reach of radar, somewhere south of india. we have bill savage with me now. he has a lot of hours behind the controls. 35 years flying one aircraft or another. he helped investigate some of the most mysterious air disasters during those years.

bill, i understand you're not convinced that this plane crashed into the ocean which is the leading theory i should mention of u.s. officials. why is that? >> well, i'm not discounting it totally. there's no absolutes here because until you find that aircraft, we're not going to know. but a highly experienced 777 captain could land that airplane in the shorter distance than the gentleman just talked about. somewhere between 4,000 and 5,000 feet is plausible. where you would hide it and what would you do with 239 people is the next question. so you would have to have a lot of help in wherever you did put that airplane. but it's not implausible. if it went in the water where is the signals? when the ships do get out there in that -- in the deepest areas of the indian ocean, two elts on board the aircraft i think would still be work at this juncture. so without -- without that electronic information being put

out by the elts and no reason to suspect the pilots per se, in an organized plot, a conspiracy, i'm just -- i'm baffled. i don't understand why the aid of several countries, the air defense identification zones, i could understand one of them missing it. but not two or three. and, you know, the asian airlines tend to be very, very good at radio procedural correctness. whereas the americans tend to cut things short as we heard, all right, good night. that tends not to be the habit of all of the asian air lines. they -- they correctly check on and check off with their identifier. and -- >> well, we do know in this case -- we do know in this case

there was at least one missed hand shake when i went from the malaysian radar system to the next system. i wonder if i can ask you a question, a lot of view es are sending in tweets now. it's jeff russell who asks, why should pilots have the ability to turn a plane's communications off? why do commercial airlines need stealth in effect? why is that ability inside the cockpit of the plane, the acars system, the transponder. what's the safety reason or the operational reason for that? >> well, all appliances have an on/off switch. the transponder being something under our control. we wouldn't turn the data link systems off or the acars off. the maintenance people use the acars as well when the airplane is on the ground for their purposes. we don't turn it off. so that leads one to suspect that either these pilots or somebody else in that cockpit knowledgeable enough to find the

circuit breakers for that equipment disabled the equipment. so it -- but it's implausible that the pilots did this. from the standpoint of somebody -- if you notice the time between the circuit breakers being pulled, if it were circuit breakers and the transponder going off is a few minutes. that's the few minutes that someone has to look at the overhead panel, find the line that the circuit breakers were on, identify it and read it with the dark, the printing is very small. and pull those circuit breakers. so, you know, the excursion from 45,000 to 23,000 tells me that's where the struggle was going on. because pilots even when they're making off with your airplane wouldn't do that excursion. to that high altitude. the point about the 45,000 to incapacitate people, manually the pressurization system can be

overridden and the cockpit or the entire aircraft depress surized which would have rendered the folks incapable of breathing, but it would drop the mask as well. and that's implausible as well. >> you make some great points. no one knows that cockpit better than you, so we appreciate that, bill savage. thanks for walking us through it. we are following another big story today. the referendum in crimea. the counting is underway. next, we head to crimea for the early results. create a three course italian dinner with olive garden's new cucina mia for just $9.99. first, choose unlimited soup or salad. then create your own pasta with one of five homemade sauces. and finish with dessert. three courses, $9.99. at olive garden. [ male announcer ] nothing says, "you're my #1 copilot," like a milk-bone biscuit. ♪

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to the surprise of few, ukraine's crimea region today voted overwhelmingly to join russia. with thousands of russian troops this crimea, the outcome of today's referendum was never in doubt. crimean officials show 95% of the ballots favor leaving ukraine and becoming part of the russian federation. cnn's michael holmes is in crimea. we just got details from a call between president obama and president putin. we are told that president obama told president putin the results of this referendum will never be

recognized. do you think that warning makes a difference there, has it spoiled the mood at all? are people worried about consequences? >> reporter: absolutely not on the ground here, jim, no. here in the crimean regional capital, it's been quite a night of partying. there were thousands of people, the party has just broken up. the recommend namentds remain. they'll have sore heads tomorrow. several thousand were hand. they were chanting, meaning crimea is russia. and they sang the russian national anthem with great gusto, and the fireworks went off. as you said it was the most unsurprising referendum result you can imagine but it's only recognized by crimea and russia. everyone else in the world said it's invalid and nobody is going to take much notice of it. the next steps are pretty crucial. the russian duma, the parliament, votes on the 21st, just a few days from now on whether to accept this

application via referendum to join the russian federation. now, if they do, then you can see some sanctions starting to hit home. we are expecting sanctions in the next day or so. probably going to target initially the crimean parliament, the de facto prime minister and those who put this into action. now, if the duma passes it and says yes, you can join the russian federation which everyone expects to do, then the sanctions will hit at the russian economy and at individuals as well. and those individuals are friends of vladimir putin. it will be interesting to see how hard they bite, jim. >> and michael, the promise from the russian side to respond with their own sanctions. so preparing for an economic tit for tat could be costly for both sides. michael holmes joining us from sevastopol right where the celebrations are taking place. now the fbi is investigating the disappearance of flight 370.

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should have been on the pilots from the start. as we know that malaysian police are searching their homes, they have confiscated this flight simulator. we know that u.s. officials are focusing on the pilots as well. what exactly are they looking for now? >> i think it's the same thing as the malaysian authorities. by process of elimination. i mean, they have been looking at the passenger manifest. they found no indications, no nexus of -- to terrorism as you and i have both been reporting in the last few days. so whatever happened they think has to have happened inside the cockpit. so what they're doing now is going back and looking through any information they can find on the two pilots. to make sure that there's nothing they have missed to see whether or not perhaps there's some affiliations or perhaps there's some signs that they might have given in the last few weeks, last few months perhaps, to indicate that they had some plan to do this. so far, they have found nothing. but, you know, the problem is, you know, there's so few facts, so little information they have right now.

they're doing the same guess work we're doing and the viewers are doing, trying to figure out what could have happened to flight 370. >> and you mentioned what intelligence officials have been telling both of us. constantly they'll say there's no connection to terrorism. no established link yet. >> right. >> but they're still interested in the signs that it would require the pilot or someone with a pilot's knowledge to make the moves in the plane necessary. so that's the key, right? they haven't established maybe a previous link. they're looking at behavior. >> they're looking at behavior. you have to look at this aircraft. i mean, it's a very sophisticated aircraft. so to pilot this thing is not something that just anybody can do. also, to turn off some of the electronic systems, the communication systems, transponder, these are things that you off to have some knowledge to be able to do. and then to fly the thing for several hours thereafter. these are all things that point towards something happening, again, they're not saying that

they have ruled out all other theories but it just is prudent to take another look at the two people in the cockpit to see if there's something that could explain all this. >> right. in fairness, we shouldn't call them suspects. it's things they're looking into because they have questions about them. >> that's right. >> thank you, devin perez from washington. now, the families of those on flight 370 are waiting in agony. coming up, the story of one man whose kids begged him not to get on that flight. but from the sports world, the ncaa men's basketball bracket is set. kicking off the annual office pools and nonstop speculation known as march madness. 68 teams that will work their way through early rounds, regionals, the final four and the national title game on april 7th. virginia celebrating their victory in the acc tournament is a number one seed. florida the winner of the s.e.c. tourney also number one. arizona, wichita state claimed

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the agonizing wait for information about flight 370 is almost too much for some families to bear. we talked to one father, waiting for news about his son. sadly, he remembers the image of his grandchildren begging their dad not to take that flight. >> for a family of the passengers on flight 370, the wait is excruciating. if i had two or three, this father tells us, i might be able to accept it. but this is my only son. he is waiting for his son, 34-year-old, an i.t. specialist who is headed to beijing for a new job. surely they must find the plane, he says. that's all i hope for. the whole world is out looking for it. but i ask him, what if they don't?

he answers, if not, well, only god knows. it's in god's hands. it's fate. he tells me he worked 20 years as a security guard to put his son through college. and at home, a wife and two young children also wait for him. he was responsible for everything his father says. even these clothes i'm wearing. whatever country he was in, he would call and once a week he would come see us with the whole family. he really took care of us. >> he was telling me that the two younger children didn't want to see their father go to beijing. so they clung to his legs and refused to let him go out the door until he promised to bring them chocolates and presents when he got home. so that has to be -- it's very sad. before we leave, he tells us to

call any time with any news we have. he hardly sleeps he says. and now he never turns his phone off. not even for a moment. this is cnn breaking news. >> you're in the cnn news room and we're tracking two enormous stories. cheers and tears erupted after a controversial vote to return part of ukraine's fragile nation to russia. we have early results from the referendum in ukraine's crimea region. crimea's leaders say crimea is going home to russia. president obama and russia's president putin spoke today on the phone about the tense situation. sanctions against russia could start as early as tomorrow. plus, we're also tracking dramatic new twists in the

search for malaysia flight 370. the airliner disappeared now ten days ago, triggering the aviation mystery that's baffled the world. here are the new developments as we know them today. pakistan says no trace of the missing plane ever showed up on its radar systems. and pakistan says the plane would have been treated as a threat if it did show up. right now police are examining a flight simulator taken from the pilot's home and new scrutiny is baring down on both the pilot and copie lot. plus, the search for the missing airliner is switching gears. why it may have landed before the last satellite contact. we are bringing in the experts to track the missing flight. but first, with such a huge search area, malaysian authorities are asking the question where to begin. we have andrew stephens live in kuala lumpur, the capital of malaysia. andrew, in terms of the investigation first before we get to the search, we know they're focusing on the cockpit and they have gathered more evidence from the