Good evening. As a group of heavily armed and highly motivated terrorists continues its way across iraq, its not yet clear if the u. S. Will take any action in iraq. The president has ruled out any troops, and the American People arent at all sure we should take any action even though whats happening now is a direct outgrowth of the u. S. Invasion there over a decade ago. The u. S. Has started removing some of its staff from the fortresslike u. S. Embassy in baghdad, calling this a relocation and not an evacuation. U. S. Marine helicopters will come and go from a navy vessel in the persian gulf where the u. S. Has sent an Aircraft Carrier and three destroyers. The u. S. May have to work with iran before this is all over as another iraqi city has now fallen to this group called isis. Our chief foreign correspondent, richard engle, is back in baghdad tonight to start our coverage off. Richard, start with what its like there now. Reporter good evening, brian. There is a curfew in place here, and there is absolutely no one on the street. That is, no civilians. There are lots and lots of Police Officers out, checkpoints every few hundred yards. Parts of iraq fell quickly to that militant group, not baghdad. Here, they are bracing for a fight. These iraqi soldiers, prisoners of isis, in a video not verified by nbc news, are being forced to swear allegiance to the al qaeda offsho offshoot that overran their position. One refuses and is executed. The others agreed, but they, too, were later found dead. They are getting stronger, joined by supporters of Saddam Hussein and sunni tribal leaders. In mosul they march together on their way to hang an iraqi soldier. This weekend, the militants released pictures of dozens of iraqi soldiers being led to their death. The iraqi army is now fighting back with air strikes and thousands of new recruits. But the insurgents have their sights on baghdad, and if they cant get to it, they may try to send in suicide bombers instead. It is strange to come back to baghdad and see it like this. This is normally the busiest market in the city. Today all of the shops are closed, and this street is normally full of traffic. Today, hardly anything. And there are gunmen on every corner. Some are soldiers. Many are shiite militiamen responding to a call to arms from their religious leaders. Theyre ready to defend the capital and the shiite faith. We did find one shop open. A grocery owned by jamel karesh, he thinks the isis radicals arent Strong Enough to enter baghdad now. Instead, he expects car bombs. People are afraid, he said. We expect bombings will come at any moment. This is perhaps the most iconic place in baghdad, the squiare. There used to be a giant statue of Saddam Hussein until marines came down the street, the statue came down, and saddams regime collapsed. Iraq was at a turning point now, and it may be at a turning point now. As evening came, even fewer people were out in the city of seven million. Bracing for a new round of sectarian war, perhaps the worst this country has ever seen. Whats next, brian, could be a very difficult phase for this country. The Iraqi Government will try and retake some of the cities have that been captured by isis. That means the shiite government dropping bombs on civilian areas, on sunni cities. There will likely be a response with car bombings here in baghdad, and this could be a long fight. Brian . Richard engle back in baghdad for us after many lives of living there while covering the war. Richard, thanks. And on the diplomacy front, it appears the u. S. Is considering at least working with iran. At least the two countries are prepared to talk about working together to quell the violence in iraq. Andrea mitchell monitoring all of it from our d. C. Newsroom tonight. Andrea, good evening. Reporter good evening, brian. With the militants now closing in on baghdad, tonight the president has notified congress she sending up to 275 military personnel to iraq to help secure the embassy in baghdad. In addition, he has summoned his naurt tenational Security Team weigh options including possible air strikes that would include Ground Forces to help target it help determine the targets. Also, among the topics of todays meeting, todays first talks between the u. S. And iran about iraq. In a classic case of strange bedfellows, the u. S. Navy spoke to iran to save baghdad from falling. Even as the leader of the National Guard is in baghdad helping militias defend the capital. Were open to discussions if theres something constructive that can be contributed by iran. If iran is prepared to do something that is going to respect the integrity and sovereignty of iraq and the ability of the government to reform. Reporter the talks between kerrys deputy, william byrne, and ministers restarted. The goal is to press iraqs Prime Minister maliki to include rival sunnis in his government, a key step toward a political solution. Still, any talk of military cooperation with iran makes u. S. Allies in the region, israel, and saudi arabia very nervous about any dealings with their adversary, iran. And among the military options is the limited use of special forces inside iraq if needed to help guide possible air strikes. Brian . Of course it could still be early yet in this crisis. Andrea mitchell in our newsroom newsroom tonight. Thanks. In this country tonight, the army has officially opened its investigation into the disappearance of Bowe Bergdahl in afghanistan back in 09 and how he ended up in the hands of the taliban. They put a twostar army general in charge of the investigation, which were told will not include an interview with bergdahl himself, not yet anyway, because they say its too early in his recovery and that he is not yet up to it. Tonight, weather forecasters have issued a statement about what they are calling a particularly dangerous situation as multiple tornadoes touch down in the middle of our country. The upper plains including one incredible scene tonight as two funnels touched down side by side at the same time. There are late reports of damage and possible injuries here. Our own tom costello has details. Reporter near the nebraska south dakota state line, a massive tornado dropped out of the sky Late Afternoon taking aim at the small farming town surrounding stanton. Its a really incredibly strong tornado with another secondary tornado, like i said, wrapping around it. Reporter veteran Storm Chasers described at least two tornadoes dropping out of a pitchblack super cell, bringing with it hail two inches in diameter. Multiple funnels, one of them a mile wide, chewing up farmland and throwing it hundreds of feet into the air. Take cover now if you live there. Reporter the Weather Channels radar showed a massive cell of red and orange. At one point, we saw three tornadoes on the ground, and looks like the town got the worst of it. The town of pilger, nebraska. Reporter interstate 275 in nebraska running through the heart of the zone. Theres no reason to suspect that this particular storm is going to weaken any time soon. Reporter a violent afternoon in northeastern nebraska with concern it could be a very long night in the heartland. Tom costello, nbc news, washington. While we just heard from him in toms piece, we want to get more on this night ahead. We want to bring back in Weather Channel meteorologist and Severe Weather specialist dr. Greg postell watching from Weather Center headquarters. Whats doing this, and whats this a part . Very strong jet stream and unstable air across the plains. In fact, that storm that was producing the tornadoes you saw in the video earlier is still in progress about 20 miles to the southwest of sioux city iowa. You see on the pictures a cluster of storms, some of which are producing tornado like that one, this one. One up here. It is going to be a long night ahead, Severe Weather across the heartland of america, guys. We have Severe Weather watches out across the region. A tornado watch in nebraska, particularly dangerous situation there until 10 00. And a tornado watch until 8 00 in iowa. We can animate the radar, what the radars going to look like. We think overnight tonight. The good news is i think by midnight the threat transitions into a high wind event instead of a strong tornado one. Still rolling across the heartland, maybe even getting to chicago by the morning. Brian, back to you. From the Severe Weather center at the Weather Channel, dr. Greg postel, thanks as always. On the west coast, a wildfire burning out of control in california. Thousands of acres have been charred so far. Firefighters are now trying to protect hundreds of homes from the flames. Nbcs Miguel Almaguer is in kernville, california, not far from bakersville. Reporter the shirley fire is the most dangerous wildfire burning in california tonight. This is the reason why the whipping winds. Some 2,000 acres have been charred so far, 1,000 homes are threatened at this very hour as the fire work its way through rural mountain areas after breaking out friday. The blaze more than doubled in size overnight, the air attack here is crucial. The fleet of helicopters and planes have slowed the fires progress even as wind gusts have topped 30 Miles Per Hour today. Crews arent taking any chances as they work ahead of this blaze. 4. 2 million has been spent on Fire Suppression so far. A Staggering Number after just three days with many vacation homes, power lines, and communication facilities under threat. Some 1,100 firefighters are on the front lines. This sblaz rough l blaze is roughly 10 contained. Firefighters note these are conditions we typically see late in the fire season. As you know, this fire season is just getting underway. Covering the hot fire outside of bakersfield, california, in kernville. Miguel, thanks. General motors announced another recall. This time almost 3. 2 million vehicles for a grand total this year of 20 million worldwide. That is roughly equal to the total number of cars gm sold in the u. S. Over the past seven years. Its all related to the key problem that has shut down cars ignitions, power steering, brakes, air bags. Theres a full list of the new group of vehicles involved in the recall on our website tonight, thats nbcnews. Com. U. S. Supreme court agreed today to decide an increasingly common question in our digital age in which people sometimes write things on line that they might not say to your face. This particular case involves messages that someone posted on facebook. And the question before the justices is when does a threat written on the web cross the line from free speech to a crime . We get our report from our justice correspondent, pete p williams. Reporter with more than 165 million americans now using social media, the experts call it digital courage. Posting comment thats probably wouldnt be said to someones face. A worker at a pennsylvania Amusement Park got in big trouble four years ago after his wife left him and took their two children, leaving his despondent. Ripping on a comedy troupes routine about free speech its illegal, a federal offense reporter he wrote on his facebook page, did you know its illegal for me to say i want to kill my wife . After she got a restraining order against him, he wrote, put it in your pocket s. This t thick enou pocket s. It thick enough to stop a bullet . He also wrote, enough Elementary Schools in a tenmile raid why us to initiate the most heinous School Shooting imagined. He was found guilty of posting an online threat. The judge said it wasnt whether he intended to make a threat but whether a reasonable person would have considered the words threatening. His lawyer says that legal test doesnt work on the internet where it may not be obvious someone is blowing off steam. These interactions are taking place on line where people youve never met before can read your comments. And you know, they have no idea whether you meant it or not. Reporter the Obama Administration says the law is intended to protect people from the fear of a violent attack. But legal experts say the test needs updating. Its important in terms of what constitutes a true threat because the person who feels threatened may have been someone who was not intended to ever see or hear this communication. Reporter now the justices will decide whether the medium counts as much as the message. Pete williams, nbc news at the supreme court. Still ahead for us on a monday night, what weve learned about kids and caffeine. How much theyre consuming and what even a little bit is doing to their bodies. Then later, hes off. A future king with big shoes to fill makes a big move with everybody watching. Shingles affected me tremendously as a pilot. The pain in my scalp area and down the back of my neck was intense. It would have been virtually impossible in that confined space to move to change radio frequencies. I mean it hurt. I couldnt even get up and drive let alone teach somebody and be responsible in an airplane. As a pilot that meant i was grounded. Take them on the way you always have. 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Of course theres a first for every new american generation, and no matter what this current generation later achieves, they will be known for among other things their consumption of caffeine. They are consuming it like never before. 75 of them in something they eat our drink want tonight, in health news, theres a warning about what even a small amount of caffeine can do to children, especially boys. We get the story tonight from our chief medical editor, dr. Nancy snyderman. Reporter tara and Mitch Lieberman say their boys have so much energy heres water reporter they carefully limit the amount of caffeine their kids consume. I just feel that its healthier to give them juices with low sugar amounts, water, milk. Stuff like that. Reporter caffeine is hard to avoid these days. No longer just in coffee, tea, and colas, its now added to many new products from Energy Drinks to snacks and candy. And while weve known for some time that caffeine raises Blood Pressure and lowers heart rate, todays study in the journal pediatrics reveals how it affects boys and girls differently after puberty. The report from the university of buffalo studied the impact of even small amounts of caffeine on children ages 8 to 9 and on teenagers ages 15 to 17. The younger kids got approximately the caffeine equivalent of a half to full can of soda. The teens got one to two cans worth. Among all groups, the teenaged boys experienced slightly higher Blood Pressure levels than the girls. Researchers in this study arent sure why teenage boys are more sensitive to caffeine but suspect it may have to do with hormones. And another concern the effect of caffeine on millions of kids with other medical issues like adhd. If you take asthma medication, if you take other medications, behavioral medications, this can be a big problem. It is something that has a biological effect on our bodies and you have to be careful. Reporter last year the food and Drug Administration suggested that we start to look at the safety of added caffeine to products. But the problem is, bottom line, no younger children should have it, and teenager should not be fooled by the promise of an energy boost. Caffeine is a stimulant. Real energy comes the oldfashioned way by eating well and getting enough sleep. Brian . Dr. Nancy snyderman, thank you as always. Another break. Were back in a moment with the news tonight about a place that changed the course of modern american history. My name is karen and i have diabetic nerve pain. Its progressive pain. First that feeling of numbness. Then hot pins. Almost like lightning bolts, hot strikes into my feet. So my doctor prescribed lyrica. The pain has been reduced and i feel better than i did before. [ male announcer ] its known that diabetes damages nerves. Lyrica is fdaapproved to treat diabetic nerve pain. Lyrica is not for everyone. It may cause serious allergic reactions or suicidal thoughts or actions. Tell your doctor right away if you have these, new or worsening depression, or unusual changes in mood or behavior. Or, swelling, trouble breathing, rash, hives, blisters, changes in eyesight, including blurry vision, muscle pain with fever, tired feeling or skin sores from diabetes. Common side effects are dizziness, sleepiness, weight gain and swelling of hands, legs and feet. Dont drink alcohol while taking lyrica. Dont drive or use machinery until you know how lyrica affects you. Those who have had a drug or alcohol problem may be more likely to misuse lyrica. [ karen ] having less pain, that means everything to me. [ male announcer ] ask your doctor about lyrica today. Its specific treatment for diabetic nerve pain. [ male announcer ] ask your doctor about lyrica today. So i can reach ally bank 24 7 but there are24 7branches . Im sorry im just really reluctant to try new things. Really . Whats wrong with trying new things . You feel that in your muscles . Yeah. I do. Drink water. Its a long story. Well, not having branches lets us give you great rates and service. Id like that. Experience a new way to bank where no branches great rates. Ally bank. Your money needs an ally. To help protect your eye health as you age. Would you take it . Well, there is. [ male announcer ] its called ocuvite. A vitamin totally dedicated to your eyes, from the eye care experts at bausch lomb. As you age, eyes can lose vital nutrients. Ocuvite helps replenish key eye nutrients. Ocuvite has a unique formula not found in your multivitamin to help protect your eye health. Now thats a pill worth taking. [ male announcer ] ocuvite. Help protect your eye health. Sadness in the baseball world following the death today of tony gwynn. He was a hitter, one of the best ever, with over 3,100 lifetime, a career average of. 338. That career was devoted to san diego and the padres. All 20 years of it, including 15 trips to the allstar game and membership in the hall of fame. Tony gwynn, mr. Padre, died today at just the age of 54. He succumbed to cancer of the mouth and salivary glands which he attributed to years of chewing tobacco. It was a sad weekend in the nfl, especially in the city of pittsburgh, after the news of the death of chuck knonole. He invented the steel curtain defense and spectacular offense. His steelers won the super bowl in 7 had, 75, 78, 78, he drafted, bradshaw, harris, swann, and lambert. He played before becoming a legend himself. Chuck knoll was 82 years old. Tomorrow marks 42 years since the watergate breakin. Watergates been back in the news of late because of a structure that played a big role in the story. The parking garage in rosalyn, virginia, where bob woodward met his source, deep throat, who we now know was mark felt. That garage is coming down to make way for a commercial and residential complex. There is a marker out at the curb telling people the significance of the site. And the news from the u. K. This past weekend was this the future king of england can now walk. Prince george, third in line to the throne, showed a combo of walking and crawling skills as his mother, the duchess, watched, and his dad played in a charity polo match. When we come back, remembering the voice of a generation. See this . It shows the pressure points on my tired, achy feet. I had no clue i was putting this kind of stress on my feet. I have flat feet. I found this out at the free dr. Scholls foot mapping center. In less than two minutes, i got my foot map and my custom number. Im a 440. Im a 210. 340. That number matched the dr. Scholls custom fit orthotic inserts with just the right support to help relieve stress on my feet. Im a believer. Go to drscholls. Com for locations and save 10 baand frustrating. E tough. 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Temporary side effects include tenderness, swelling, firmness, lumps, bumps, bruising, pain, redness, discoloration and itching. Ask your doctor. Juvederm voluma®. Defy gravity. Time when radio was everything portable, ubiquitous, and playing the soundtrack of our lives. And spinning that soundtrack was casey kasem. While he was in the news most recently because of troubles in his family, during his own struggle with a form of dementia, his death this past weekend reminded us of a time when it seemed downright possible to reach for the stars. We get a look back tonight. Reporter long before fans recognized his face, they knew that voice. Im casey kasem, and the countdown continues. Number 37 reporter for nearly four decades, he defined sunday morning radio. Before music was digitized and downloaded on demand, kasem brought generations of music lovers together, playing americas top 40 songs from coast to coast. Hot off the record charts of billboard magazine for the week ending july 11th, 1970 reporter kasem never imagined this life. My First Priority is not music. What im home i dont listen to music. Reporter a lebanese american, born in detroit in 1932, he dreamed of becoming a baseball player but found his voice as a deejay with Armed Forces Radio during the korean war. In 1970, he launched american top 40 on radio and later a version on tv. Now were up to the numberone song in the usa reporter in 2004, he handed the microphone to ryan seacrest. I remember saying to him, look, im nervous and a little scared because you are the i go that has done this for so long. He just said, just count backwards, and have fun. Youll be great. Reporter his style was positive, upbeat, and often emotional. Dear casey kardashian. Reporter his signature longdistance signature made it personal maybe shell know its for her. Reporter he made a fortune in voiceovers as shaggy in the scooby doo series maybe you didnt pay the electric bill reporter commercials come on in hungry. Reporter even as the voice of nbc. This is nbc. Reporter his famous tag line was the rule he said he tried to live by keep your feet on the ground, but keep reaching for the stars. Reporter casey kasems iconic voice now part of american history. Rehema ellis, nbc news, new york. Thats our broadcast on a monday night as we start off a new week. Thank you for being here with us. Im brian williams, and we hope to see you right back here tomorrow evening. To see you right back here tomorrow evening. Good night. Captions by vitac www. Vitac. Com an ugly family feud brewing over casey kasems 80 million fortune now on extra. Can casey kasem ever rest in peace . The radio icons final days overshadowed by bad blood. His wife, jean, versus three of his kids. Does she ultimately hold all of the power. She does now. The mansion and millions now up for grabs. I looked at her and said, my god, girl, you look a little bit like marilyn monroe. Game over on game of thrones. The morning after the gruesome finale. Do you ever read the script and go, oh, wait. New details on Kelly Clarksons baby girl. Plus, the 27yearold ballerina dating 70yearold mickjagger. Bridetobe Jenny Mccarthy getting ready to kiss the single life goodbye. Were on Summer Wedding watch from Jessica Simpson to scarlet johansen. Why is our aflt j. In a tutu . One time only, lopez. This is extra at universal studios, hollywood, the entertainment capital of l. A. Welcome t