page. check out our home page and follow us on twitter. back here next sunday morning at 11:00 a.m. and 5:00 p.m. eastern with the latest buzz. fox news alert. a bloody situation now in east ukraine. ukraine's acting president announcing moments ago he plans to launch a, quote, full-scale anti-privity operation with the country's armed forces against pro-russian separatists, vowing not to have a repetition, he says, of the crimean scenario. this comes after a ukrainian special security officer was killed and at least five others were wounded in a gun fight with pro-russian militia in the country's eastern region. hello, everyone. i'm aaron shaun. welcome to "america's news headquarters." >> the timing, today, of eric's killing is getting the world's attention, as you might imagine.

tensions reaching a fever pitch after a group of armed men in camouflage outfits, uniforms, seized several ukraine government buildings and raised the russian flag over them. now, this has been really unfolding since yesterday. washington is alleging it's being orchestrated by moscow. national correspondent steve centanni is live in washington. >> reporter: it's a conflict nato is describing as a grave development. ukrainian special forces clashing with pro-russian militia in east ukraine with one person killed so far and as you said the ukrainian president vowing to push out the militants. they seized a police station and other buildings in eastern ukraine. after speaking on the phone with sergei lavrov secretary of state john ker i said this looked like similar to the takeover of crimea and there will be

consequences and others criticized the obama administration for not helping the ukraine cran people. >> we to at least give them some light weapons with which to defend themselves. so far the administration has not only done that, but they won't even share intelligence with the ukrainian government. i can tell from you my conversations with people in the government, they feel abandoned by us and rightfully so. this is shameful. >> at the same time, the u.n. ambassador to the united nations, samantha pour, spelled out what further steps can be taken. >> the president has made clear that depending on russian behavior, sectoral sanctions against energy, banking, mining could be on the table, and there's a lot in between. we've seen that the sanctions can bite, and if actions like the kind that we've seen over the last few days continue you're going to see a ramping up of those sanctions. >> and the white house has announced vice president joe biden will be traveling to kiev april 22nd for meetings with ukrainian leaders. harris? >> steve centanni, thank you.

>> with more on this let's go to ambassador john bolton, former u.n. ambassador to the united nations, fox news contributor and senior fello at the american enterprise unit. ambassador, ukraine is fighting back, promising this large-scale operation. what does that mean, and what could come next? >> i don't think we should make any mistake here. we are right on the brink of general hostilities between russia and ukraine. i don't think there's any doubt that russian agitators have help to provoke this, but there's a lot of dried tinder on the ground in ukraine that -- that they have capitalized on. if in fact ukrainian military units now really move to the fore, that's all the excuse that vladimir putin would need, if he chooses to take it up, to send russia the border again into eastern and southern ukraine, and that really would provoke general hostilities. we don't know what the russian troop dispositions are at this point, but we know they have got a lot of forces right near that border, and really, this is at

the point where something accidental, not a deliberate decision by either side, but something accidental could really set it on fire. >> so you're saying this could be the excuse that putin would then jump on to potentially invade ukraine? let's remember how world war i started. >> well, you know, he looked at the american and european reaction to his military seizure of the crimea, and despite what we just heard from the administration, it was pathetic. putin has paid no price for seizing territory of another sovereign nation by military force, and i think he judges that the administration is all talk and no action. as senator mccain said, we've done nothing tangible to help the ukraine, and we haven't made russia feel any pain whatever for taking the crimea, so i think putin thinks he's got a clear field in front of him, if he chooses to act militarily. >> talking about putin remaining defiant against u.s. interests, what about iran?

news today that they are continuing to be defiant. tehran is sticking by its choice for the united nations ambassador. on friday the white house said it will not give a visa to him to represent him, citing his role in the crisis situation and there's also allegations he was part of a policeal assassination, the victim, mohammed nnamdi, the leading iranian defector in italy, shot but unman gunman in rome and he had been the ambassador there. the opposition cites german and italian police reports that claim that he organized the murder of nnamdi, that's nnamdi on the right. he was never charged in the iranian mission to the u.n. which tells fox news the allegations are, quote, nonsense, but potentially are they. you're looking at assassination scene where nnamdi was shot to death. what do you think of the allegations and about the fact that iran today is saying that, no, they are not going to listen

to ambassador samantha pour and will still send him here? >> the allegations about the participation and assassination in italy are very serious and warrant a very careful look. we know senior iranian diplomats all around the world are in effect agents of the continuing islamic revolution. some of them are actually officers of the quds force and the iranian revolutionary guard cox and the chief responsibility of the iranian ambassador to the united nations in new york is not dealing with u.n. general assembly. it's conducting a propaganda and intelligence operation directed largely against the united states. so i think the naming of alebbi was an insult to the united states to begin with. it took an act of congress to forced administration into taking action, and they never actually said they denied the

visa. they said they could not be acting on it, but i think the leadership in tehran sees the same weakness and reliance on rhetoric rather than strength that the russians see, and i think they are acting accordingly. i think we're seeing now the unfolding of the next three years under obama. >> iran says that they will go the legal route at the united nations. can the u.n. in some type of appeal force us to take alebbi here even though we may not want him? >> no, they can't. they are trying to cover their postiors here and will make it unpleasant for us. what i fear having taken this outrageous step of proposing him to be the ambassador, they will pull the nomination back and expect some concession from john kerry on the nuclear weapons talks, and i think he'll give them one. that's the way he negotiates. sort of pitiful to watch, but i think for the iranians, this whole thing, this whole ploy was a win-win, and we'll see what

the next step is from the administration. >> finally, ambassador, russia defiant, iran defiant on this sunday. what do you take of that message? >> i think it's clear that our adversaries aron the world have sized the administration up as being weak and inattentive. draws red line and then ignores them. acts as if words are the equivalent of oh, and our friends and ails around the world see the same thing. they see no american leadership. they see an america that's unable to defend its own interests, so if you're in ukraine, you're feeling pretty lonely and isolated right now. >> and it could be a very dangerous situation and seems to be that. ambassador john bolton, always good to see you, as always. harris? >> the hunt for flight 370 has potentially hit a critical point. the all-important black boxes on board that passenger jetliner that vanished more than a month ago are likely fading, maybe even running completely out of juice. that's just based on the manufacturer guidelines for how long those batteries might last

and here's the latest on the pinging noises search crews thought they heard coming from a plane's black boxes. they have nod heard a ping since april 8 when four signals helped narrow down the search. it's a huge section of the indian ocean, 22,000 square miles and to be clear because they were pings from the boxes, doesn't mean it was the boxes on board that plane. drama inside the courtroom when track star oscar pervertus broke over and over and my question for legal experts getting miked up right now, how in the world do you prosecute a guy on the stand for murder when he keeps crying? doesn't that taint the judge in enter bunigerville, nevada, will jam lajeunesse, an american rancher taking on the federal government over land that's been in his family for more than 200 years. william?

>> reporter: well, harris, one day after that very tense standoff here in nevada, most of the protesters are packing up and going home but cliven bundy's battle is not over, and i'll have the details coming up. ahhh. beautiful day in baltimore where most people probably know that geico could save them money on car insurance, right? you see the thing is geico, well, could help them save on boat insurance too. hey! okay...i'm ready to come in now. hello? i'm trying my best. seriously, i'm...i'm serious. request to come ashore. geico. saving people money on more than just car insurance. sfx: car unlock beep.

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...there's a lot of buyers for a house like yours. (dad) that's good to know. (mom) i'm so excited. payback time for boxer manny pacquiao. in the welterweight title he won beating timothy bradly at the mgm grand in las vegas. pacquiao won by unanimous decision. the victory comes nearly two years after he lost to bradley in a highly controversial split decision. that sparked an investigation by the nevada attorney general's office into the judges in boxing. >> well, there has been a major development in that showdown between a nevada rancher and the federal government over grazing rights. federal agents calling off the efforts to seize the cattle of the rancher's herd and saying it will no longer enforce that order on rancher bundy that

prohibits him from using a piece of land owned by the blm for grazing his cattle. william lajeunesse live in bunkerville, nevada, with the very latest on this confrontation. hi, william. >> reporter: well, eric, this being sunday and this corner of nevada, most people at church, the out-of-state protesters going home. after a victory celebration right here last night and, of course, a very tense day. when you did have hundreds of protesters and self-described patriots, militia, sympathizers, blocking interstate 15. also confronting state and local police, unsuccessfully raiding that cattle impound lot but refusing to let blm agents leave. both sides, according to witnesses, had their guns out. as this picture shows, one protester with a rifle in a sniper position above blm agents during a standoff at the cattle yard gate. former arizona sheriff richard

mack worried about what was going to happen next. >> we were actually strategizing to put all the women up in the front. if we're going to start shooting, it's going to be women that are going to be televised all across the shot getting shot by these rogue federal officers. >> reporter: blm said it had no field reports of guns pointed at the other side, but it's investigating yesterday's confrontation. some of bundy's supporters had to be restrained, stopped from provoking police, but their show of force worked. after a short negotiation, clearly they said they were not going to leave, not going to stand down. blm released bundy's cattle. that, of course, considered a victory for those who came here to support the second amendment, state's rights and seeing an overzealous and abuse of federal authority that they consider a threat to their way of life. >> we're not fringe. we're hard working americans. we care about our country. we care about our land. we care about our fellow countrymen. we care about the american way

of life. >> reporter: the bundys say they are still going out to two other impound yards to retrieve their cattle, but the federal government says it will continue to go after bundy judicially and administratively. back to you. >> yeah, they say, he hasn't paid his grady fees, like $2 million. william, thank you so much. >> the bladerunner is about to get another round of tough questions when he testifies at his murder trial this week. the prosecution is expected to ask him what happened the night he shot and killed his tv reality star girlfriend, and in an unusual move for her family, some words now about oscar pistorius and his emotional testimony thus far. >> i'll take responsibility, but i will not look at a picture where i'm tormented by what i saw and felt that night. as i picked reva up, my fingers touched her head. i remember. i don't have to look at a picture. i was there. mayo? corn dogs? you are so outta here! aah! [ female announcer ] the complete balanced nutrition

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we are expecting to see paralympic track star oscar pistorius take the stand again tomorrow at his murder trial, and prosecutors will likely challenge his account of what happened the night he fatally shot his girlfriend, reeva steenkamp, and now her sister is speaking out about his testimony, saying, quote, he's trying to convince the court that they were really close and that he cared for her. it's not true. he is a disgusting liar, end quote. she and the rest of the world got a taste of pistorius breaking down as the chief prosecutor went to work. >> why are you getting emotional? >> i'm very emotional, my lady. >> why? >> because it's very difficult to remember. >> why would this make you emotional? >> it's the night i lost the person i cared about. i don't know how people can

understand that. >> she was standing in front of the door talking to you when you shot her? that's the only reasonable explanation for her standing upright. that's the only reasonable exexplanation why you shot her in the hip where you did? >> that's not true, my lady. >> he she wasn't scared of anything, except you. she wasn't scared of an intruder. she was scared of you. >> that's not true. >> joining us now is robert shock, keisha he haven, i know it's a different country, different form. not true, my lady. you get to talk directly to the judge. >> during a bench trial and without a jury, they are not showing him without the camera, turning to the judge saying it's not true, my lady, because she is the one finding what happened. >> what are his defense

attorneys? they don't get to say object? i'm not you guys, but wouldn't you be hand in the air saying i object. >> i would have objected. the prosecutor is very argumentive and stating you're this, you're not, and the first thing i thought why isn't his defense attorney objecting. >> how is the prosecution doing, robert? i'm curious because this is a tough spot to be in. the guy is a serial cryer on the stand so you don't want to go after him too hard and make him break down and i suppose look sympathetic. >> right. who is he looking sympathetic to? i don't think the judge is really going to care about the whole emotional aspect of him. she will give him time and sitting there trying to find out what happened here. jurors in the united states are always instrublgted emotion is not a factor in this case. >> right. >> and the judges know that. >> does that work? >> you know, it doesn't with jury trials and that's one of the things defense attorneys will play on. if my client is guilty, you want to appeal to the jury's sympathy

but with the judge she has seen so many of these cases. >> yeah. >> looking strictly at the facts that are presented, and what the law -- how the law applies to those facts. >> right. >> and it correctly reflects back on her if she seems at all to be leaning one side or the other. she knows she will have to see this again or potentially another judge will. >> right. >> kisha, i read some of your notes on this case, and i was really start tolled find that you never would have put him on the stand? >> i wouldn't, because i feel that his account of what happened is so unbelievable that putting him on the stand with not having a jury trial is just going to open him up for more -- his credibility being impeached because it doesn't make sense. if i was the defense, i would say, you know what, the prosecutor has the burden of proof, let's just let that be, and our argument in the end is that they did not prove every element of murderer. >> by i've always read, robert, you do put your star witness, your defendant up on the stand if they are popular, good looking.

i mean, check a few boxes. this guy is a track star, the world knows him. >> a national hero and this is where kisha and i disagree. would i have put him on the stand. no other living witness that can contradict what he's saying, if he testifies he established what happens that night and no one can get on the witness stand and say other and the prosecutor's position, although accuseatory, saying she was behind the door, and he's saying no. secondly, he's charged with murder, pre-meditated. you have to establish that it was not pre-meditated, that it was an accident so worst case scenario it was a manslaughter. >> all right. real quickly about what happened this week and where you see this case going, because, i mean, for prosecutors, if they are too tough on him again and he starts to cry, when does that flip the switch with this judge and she says wait a minute? >> you know what, it does look bad and the judge will look upon

that it's not a good thing that the prosecutor is doing, but i think the way this crime was allegedly committed it will be difficult for the judge to use that and say i'm going to acquit this defendant. >> or stop the questioning at some point. i'm just curious. at one point, i don't want to gross people out, but they were bringing in buckets for him to be sick in because he couldn't stand to look at the evidence and to hear -- that's got to have some effect on you if you're human. >> some effect, yes, but to what exte extent? you have a situation, you take your witnesses as they are. you're not going to question the most important witness in the case or cut it off because he's becoming overly emotional. >> or does it backfire? >> it may, and a lot of times the judge will say let's take a break so the witness can compose themselves and get themselves together. >> i read kisha's notes and i read robert's, you think he should go for manslaughter and get -- you think he's up against it with the murder charge. >> i think he's up against it with the murder charge. i believe he was boxed in a

corner because relying on the forensic testimony alone would have gotten him to manslaughter. he wants to be acquitted but in a worst case scenario for him he's got to hope that it's a manslaughter. >> all right. i'm just glad you two were here. thank you. >> eric? >> well, harris, a group of paralyzed men actually able to move their feet again. amazing knew treatment that's giving new hope to thousands of paralyzed people. we'll have that straight ahead. plus a new weapon in the fight against hepatitis "c." we'll tell you about the new drug researchers are describing as a major breakthrough. all that and a lot about our health coming up with the doctors on "sunday house call."

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. hello, i'm harris faumner in today for jamie colby. time now for "sunday house call." >> and i'm eric shawn. joining us as all is david samadi. >> and dr. marc siegel, author of "unlocking the secret code of sickness and health." >> doctors, nice to see you. >> good afternoon. >> well, hello. >> let's begin with a ground breaking study giving hope to so many people who cannot move their limbs, a study involving four men who have been paraze