on this tuesday night, breaking news. the dramatic finish to a fight for power in israel. and the last-minute threat that could destroy any chance of a peace plan. downfall the surprise resignation of a rising star congressman who made headlines with the doughton abby office. a spending scandal ploding all around him. a u.s. military veteran taken down by the feds. charging the cockpit, an air scare caught on camera. passengers rushed to n who was screaming about jihad and a bomb onboard. detecting breast cancer. new questions about the accuracy of biopsies. are one in four patients being misdiagnosed. "nightly news" begins now. >> announcer: from nbc

news world headquarters in new york this is "nbc nightly news," reporting tonight, lester holt. good evening on this very busy news night, we begin with a high-stakes showdown that has left years of american peace efforts in the middle east teetering on the brink. . benjamin netanyahu took to twitter toont to declare himself the winner. if he prevails, the implications are enormous, because just before today's vote, netanyahu publicly shut the door on a two-state peace solution rejecting an idea of a palestinian state, a key pillar of american diplomacy in the region. we begin with our chief foreign affairs correspondent andrea mitchell in tel aviv. >> reporter: it was a dramatic finish to a frantic three-month campaign capped by benjamin netanyahu's appeal to his hard line base. in a rare election day

appearance the prime minister said go out in passmasses to the ballots. pleading with his supporters to offset what he called extremist israeli arab candidates. late polls showed him losing ground. netanyahu pledged to prevent the creation of a palestinian state. reversing decades of promises by israeli leaders to american presidents, from carter to obama. and what netanyahu told me only last october. >> we need to have a vision of peace of two nation states who recognize one another. israel is a nation state of the jewish people, and palestine is the state of the palestinian people. >> reporter: of course there was that american campaign stop. his controversial speech to congress. netanyahu was right to worry. tonight many voters told me they wanted a better economy and were ready for change. >> he stated there will be no palestinian state. ten years ago they were talking about two states.

and it didn't happen in the last ten years. it's not going to happen. with netanyahu >> reporter: why not netanyahu? >> because i think he had his chance to do for the past few years. i thought we need a change. >> reporter: but in the end netanyahu got his voters to the polls. >> it's very important to make sure that the next government is going to be right-wing government. >> reporter: and as you can hear, here at netanyahu headquarters, they're celebrating already. even though as the votes are counted, it still may be a tie. he has more natural allies to form a coalition. this has profound implications that could mean the end of peace with the palestinians, the end of peace for president obama, and change the course of history in the middle east for years to come. lester? >> a lot of moving parts there, andrea mitchell. thank you. let's turn back to this country now and the sudden downfall of

a young political star who made national headlines for a capitol hill office decorated like doughton abby. he's resigning his seat in the house after a scandal over his spending habits grows all around him. kelly o'donnell has this report. >> reporter: a political career undone by his curious office decor. and extravagant travels as seen on instagram. >> let's say we first take a selfie. say hello, new york! >> reporter: 33-year-old illinois republican aaron schock whose famous abs landed him on the cover of "men's health" magazine today topped headlines with his announcement, schock will resign from congress. i do this with a heavy heart, he wrote. schock stunned constituents waiting to see him. >> i didn't really think he would resign. it was kind of discouraging when more would come out. >> reporter: what began as interest in schock's douton abby

style office makeover quickly spiraled to tough scrutiny of schock's use of taxpayer and campaign related funds, including private planes. >> clearly, you know, when you rent a plane, you go around your district. people can say, that seems out of touch. i get it, okay? >> reporter: schock paid the government back more than $40,000 for some expenses, and promised to counsel review. but new questions surfaced monday. the sun "times" and politico reported that schock may have overbilled for mileage. schock claimed about 170,000 miles. but public records showed his vehicle had only been driven 80,000 miles. tonight they say schock will repay the government for all mileage he claimed during his six years in congress. no dollar figure given to us yet. to make it all the more unusual, schock announced his resignation without telling house speaker, john boehner, who later said, it's the

right decision. an american military veteran accused of trying to cross into isis-held territory and join the group is in custody for providing material support to a foreign terrorist organization. nbc's jim miklaszewski has the details for us. >> reporter: he's identified as a former u.s. air force airplane mechanic. court documents claim that in january, the 47-year-old moved from egypt to turkey in an effort to cross the border into syria to join isis in the violent jihad. but turkish authorities denied him entry. he was deported to the u.s. and arrested by the fbi. on his laptop agents found 180 jihadi propaganda videos and isis videos of mass executions. a cell phone contained a photo of a machine gun. born and raised in the u.s., pew was in the air force from 1986 to 1990. in 2001, the fbi got a tip that he sympathized with osama bin laden. terrorism experts say at 47, pew would not have been much of a fighter. but as former u.s.

military, he could have been a huge propaganda tool for isis. his court-appointed attorney said today that plead not guilty. jim miklaszewski, nbc news, the pentagon. tonight, some passengers onboard a united airlines flight from washington to denver describing what some are calling the scariest of their lives, a man rushing toward the cockpit they say screaming jihad and yelling about a bomb all of it caught on camera. nbc's peter alexander has the tape. >> reporter: frightening moments just minutes after takeoff. an unruly passenger started yelling, claiming there was a bomb onboard. and headed toward the cockpit. >> he was saying, jihad, he was saying there's -- the plane's going down. >> reporter: don and another passenger, scott, quickly >> i immediately put my arms around his torso. and i believe i kicked the bottom of his leg and flipped him on the ground. >> no, come on! >> reporter: the pilot

en route from dallas to dulles calmly alerted the tower. >> reporter: the plane was cleared to return to dulles. once on the ground, the disruptive passenger was detained and placed on a 72-hour mental evaluation hold. he was not arrested and not charged, and no weapons were found. >> the amount of power that this individual had for a solid 20 to 30 minutes, it was just unbelievable. >> reporter: authorities say there's no reason to suspect any ties to actual terrorism. peter alexander, nbc news, washington. let's bring you up to speed on the lead story from last night. there are new twists this evening after the murder mystery bombshell involving eccentric millionaire robert durst. he's facing new weapons charges in new orleans as the authorities in los angeles want him sent to them to face charges in the shooting death

of his friend. nbc stephanie gosk has the latest. >> reporter: robert durst pulled out of the courthouse today with a smile. even as the charges against him mount. his lawyers say he did not murder longtime friend susan berman 15 years ago. and they want to challenge the arrest warrant. >> my concern is that the warrant that was issued in california was issued because of a television show, and not because of facts. >> reporter: police chief in l.a. disagrees. >> our case is independent of the documentary. our case will stand on its own. >> reporter: hbo documentary "the jinx" uncovered a letter from durst that looks a lot like an anonymous note sent to police by the presumed killer. the theories ended with now famous mumblings in the bathroom. >> killed them all, of course. >> reporter: durst's wife, kathy, disappeared in 1982. the family still waits for answers. >> i would ask bob to

forgive himself and deal with the penalties that are before him. and to basically give us a burial site. we would want kathy's remains. >> reporter: behind these walls robert durst maintains his innocence. and he could be here for another week. his next day in court is scheduled for monday. stephanie gosk, nbc news, new orleans. prosecutors in the boston bombing trial revealed another message never before seen by the public allegedly left by dzhokhar tsarnaev in the boat where he hid during the manhunt. the jury heard from the boat's owner who got the shock of his life in the boat in his backyard. our pete williams was back in the courtroom today. >> reporter: david ended a week of chaos after the marathon bombing, calling 911 when he found dzhokhar tsarnaev hiding in his boat. the boat was stored in the backyard of this house. the owner noted the cover was partly open so he got a ladder and looked inside. the jury saw a picture of the boat as it looked that

night. ladder in place, cover partly open. prosecutors reveal today that while tsarnaev was hiding in it, he just didn't write a message in pencil, he also carved on one of these wooden slats, a message said, stop killing innocent people and we will stop. an apparent reference to u.s. military policy meaning, if you stop, we'll stop. an fbi agent recalled finding two smashed cell phones on the ground near the boat, along with a debit card belonging to the man whose suv was carjacked earlier that night. the jury also heard from a close friend of tsarnaev who said he loaned this gun to tsarnaev two months before the bombing. prosecutors say that gun was used to kill an m.i.t. police officer sean collier. pete williams nbc news, boston. the head of the secret service faced a grilling on capitol hill hill today about the agents who crashed a car into a white house bar barricade after an alleged night of drinking. clancy admitted he didn't find out about the incident for five

days. even then it took an anonymous e-mail to bring it to his attention. clancy said he had no excuse for the agency's lapse. more in the battle against isis in iraq and that fight is actually being joined by american boots on the ground although these americans are volunteers veterans no longer taking their orders from the u.s. military. our bill neely was with them on the front lines outside erbil. >> reporter: war with isis kurdish troops in a front line with battle with an enemy that took their land. they are taking it back. it began with coalition air strikes, hitting isis in three villages. more than 100 kurdish troops move in. with them, a half dozen americans. veterans of the war in iraq, back as volunteers. some didn't want to be identified. the next village? >> the next village. >> reporter: they target the black isis flag in a fourth village.

as they move in, a humvee spots three suspected isis fighters running, and gives chase. later they reported three dead. the kurds suffer casualties, too. their lead humvee hit by a hidden bomb. isis has booby-trapped roads and buildings. but the village appears secure. then isis hits back. the kurds have taken that village, but there is gunfire now and a battle going on. the kurds have decided to make a retreat. there is a frantic pullback. isis may have lost ground, but they're not beaten. >> they're everywhere. >> this is going to take time. >> yes, the enemy you don't fight today you leave their children. i can't have that. >> they're just pure evil. pure evil. >> reporter: the kurds find dozens of ieds and isis tunnels. it's an enemy on the run, but ready to fight on. bill neely, nbc news, iraq. days after a powerful cyclone hit the

pacific island nation of vanuatu, many victims remain desperate for relief. our drone captured incredible images of the damage. in this devastation, many don't know whether their loved ones are alive or dead including a mother our own miguel almaguer encountered today. >> reporter: a 28-year-old on a desperate journey to find her family. >> i don't know what they are doing. if my home is still there. >> reporter: when the storm hit three days ago, she was with her husband in the capital port vila. her 2-year-old son, her mother and grandmother were here which took a direct hit from the storm. she doesn't know if they're still alive. heading to her remote village, we sent up a drone for a better look. this road was unpassable until now. friends along the way speak of neighbors who didn't survive. but they have no word about her family. after a hard 45-minute

ride -- >> there's my house there. >> reporter: she must go the rest of the way on foot. she finds her grandmother in the very spot she saw her last. but where was her son? for three awful days, she had waited for this moment. >> this is my son. i found my son alive. >> reporter: moments later she's reunited with her mother. in the midst of so much devastation, this family has found what matters most, each other. miguel almaguer, nbc news, vanuatu. a lot of news still ahead here tonight, including a major study raising new questions about breast cancer biopsies. how reliable are they? how many women are being misdiagnosed?

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a major study out tonight is raising new questions about the reliability of breast cancer biopsies. when a woman gets a mammogram showing something suspicious, she hopes, or understands a biopsy will provide definitive answers. but researchers now say as many as one in four biopsies are incorrectly diagnosed. nbc's anne thompson has more. >> reporter: breast biopsies can be painful and frightening procedures. now today, new questions about how pathologists interpret them. an expert panel

checked the pathology results of 240 biopsies. overwhelmingly, they agreed on the diagnosis of invasive breast cancer, and those that were benign. but the misdiagnosis involved two types of abnormal but not yet invasive cancerous cells. one commonly called dcis, and atypeaia. why are they misdiagnosed? >> the main reason is that the person reading the actual slide is a human being. and there is some subjectivity when you're reading live biopsy samples. >> reporter: in this study, pathologists missed dcis in 30% of the cases. in atypia even more. and overdiagnosed in 17%. >> overdiagnosing may subject women to unnecessary surgical procedures, as well as to unnecessary treatment. the flip side of that is that the cases that are

missed, these are women who are told that they don't have cancer, and may not get the appropriate follow-up. >> reporter: experts say women should seek a second opinion if they get either diagnosis, have dense breasts, or are being treated at a facility that doesn't often see these cases. to make sure the treatment you get is the treatment you need. anne thompson, nbc news, new york. up next here tonight, the surprise announcement from a rising nfl star, why he is giving up millions. millions. [ man ] i remember when i wouldn't give a little cut a second thought. ♪ ♪ when i didn't worry about the hepatitis c in my blood. ♪ ♪ when i didn't think twice about where i left my razor. [ male announcer ] hep c is a serious disease. take action now. go to hepc.com or call 1-844-444-hepc to find out how you and your doctor can take the next step towards a cure. because the answers you need may be closer than they appear. ♪ ♪ ♪ hi, tom.

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in a surprise announcement, star 49ers linebacker chris borland said he's retiring from the nfl after just one season. borland said he's worried about potential long-term effects of hits to the head. the nfl responded saying they respect his decision while claiming the game has never been safer. charles and camilla have arrived in washington tonight, the start of a four-day visit to

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finally tonight, a story that began as so many of you on st. patrick's day with guys in a bar who had an idea. they convinced people prabs after a green beer or two, to shave their heads in the name of making a difference for kids who really need it. and just like that st. baldrick's day was born. kate snow has that story. 13-year-old courtney is one of more than 500 brave souls shaving off her long locks, all to raise money to fight childhood cancers. denver's st. baldrick's on friday brought in nearly half a million dollars, adding to the more than $240 million raised nationwide since 2000. >> the hardest part is it gets really cold when you shave it off. >> reporter: when preston was 5, he was diagnosed with stage 3 hodgkin's lymphoma. in the midst of chemotherapy he came to his first st.

baldrick's event. >> there was so many people supporting me, and cheering me to fight hard, that i want to give that support back to other kids. >> reporter: now cancer-free, he comes back every year. 15-year-old quinn is still in treatment. >> when i lost my hair, it was really hard. for someone who didn't have to lose their hair said they would shave their head, i thought it was really cool. >> reporter: that someone is her nurse, tara. >> quinn is just a really awesome kid. she wants to be a teenager. and i feel like the cancer and the side effects have stifled that. >> reporter: today, quinn is holding the razor. >> i'm hoping that by her shaving my head, that she'll see we're all beautiful whether we have hair or not. >> reporter: the magic inside this tent is about a lot more than bald heads. >> knowing that even though you have a life-threatening disease, there's people that lift you up. >> reporter: beautiful people making a small sacrifice to help

a lot of brave kids. kate snow, nbc news, denver. that's going to do it for us on this tuesday night. i'm lester holt. for all of us at nbc news, thank you for watching, and good night.

lights, camera, access. of the night! ♪ take me to church ♪ >> it looked like your dad was getting a little emotional. >> i think he might have. >> bruce willis shares a tear