Happening now, terror threat. New concerns this morning over shoe bombs. Al qaeda and al qaeda in the arabian peninsula. Overseas flights coming into america on alert and on edge. Also, chaos in kiev. Police opening fire on protesters. And new this morning, ukrainian athletes pulling out of the olympics in protest. Plus, whats up with whatsapp. Mark zuckerbergs biggest bet so far. 19 billion for the texting app thats adding a million new users every day. Also, tornado threat. Isolated threat of tornadoes will be out there today. Severe weather outbreak from texas to michigan now marching east. Unseasonably warm air sparking dangerous thunderstorms for millions. Were talking about 37 million of you today under the slight risk. And is that a wolf walking the halls of a sochi hotel . Youre live in the cnn newsroom. Good morning. Im Carol Costello. We begin this morning with a new terror warning rattling nerves and ratcheting up security. The u. S. Is alerting airlines to be on guard for possible shoe bombs on International Flights into the United States. If youve flown within the last decade, american airports already guard against this threat which would be powerful enough to bring down an airliner in flight. But overseas, the screening is often less thorough. Possibly creating an opportunity for terrorists seeking an american target. Barbara starr is live at the pentagon with more. Good morning, barbara. Good morning, carroll. If you are at an airport right now waiting to board a flight you may see additional screening measures from Airport Security personnel. New concern terrorists may target direct flights from overseas heading to the u. S. The department of Homeland Security is warning airlines that terrorists may attempt to hide explosives in shoes, cosmetics and liquids. According to one industry source, the advisory mentioned more than two dozen cities overseas, including johannesburg, paris, london, cairo and some additional cities in the middle east. Dhs warning is nonspecific but the universe of people who have desire and capability is not large. Its al qaeda and al qaeda in the arabian peninsula. Reporter this demonstration shows the potential devastation of a shoe bomb. Sources say intelligence indicates terror groups have been working on a new shoe bomb design. And its not the first time theyve tried to blow up a plane that way. Shortly after 9 11, passengers on an American Airlines flight from paris to miami thwarted Richard Reids attempt to detonate explosives hidden in his sneakers. After that, the tsa started asking everyone in the u. S. To take their shoes off while going through security. This new warning comes just two weeks after u. S. Officials warned airlines terrorists could hide explosives in toothpaste tubes on flights heading to russia ahead of the sochi olympics. Officials say this new threat is unrelated. Of course, we dont know exactly who is behind this new threat, carol, but experts will tell you al qaeda and especially al qaeda operatives in yemen have never given up their ambitions to attack the United States. Barbara starr reporting live from the pentagon. Peter bergen is here now with more on this. Good morning. Good morning. So when barbara says that terrorists are working on a new shoe bomb design, do we know who is working on this design and what it is . Well, the threat from dhs is nonspecific, but the group that has experimented with all sorts of interesting designs for bombs that are hard to detect by conventional means is al qaeda in the arabian peninsula. They built the underwear bomb that failed to detonate on Christmas Day 2009. They built the bombs hidden in printer cartridges and cargo planes bound for the u. S. Luckily discovered in october 2010. And they have a very experienced bombmaker called al asiri who has never been found and is still believed to be out there. May be training other people within the group. And he has proven to be a very capable bombmaker. Hundreds of americans preparing to fly back from the olympics. So i would suppose thats why this warning has gone out. How worried should we be . Well, these warnings happen. Theres no up side for u. S. Government officials if they think they have credible intelligence not to make a public warning because no one wants to testify after an event about why they didnt disseminate this information. Typically we have lots of these warnings and nothing comes of it. The intelligence may be flawed or it may have been incomplete or maybe whatever was being planned was interrupted by the public announcement of this intelligence. Rarely do we find a correlation between a warning of this kind and an lull etent. In ukraine, the death toll climbs and the truce in word only disintegrates. This is exclusive video. You see Ukrainian Forces try to breach the fortress that now encircles the antigovernment protesters. At least 20 People Killed just today. The International Pressure is building on ukraines embattled president victor janukovic. His government backed out of a deal with the European Trade Union and shows closer ties to russia. To much of the world, its president Vladimir Putin playing a dark and menacing role here and resurrecting cold war turf battle between the east and west. Our chief National Security correspondent jim sciutto joins us. Reporter we have new death totals. 100 people have been killed since thursday. 500 injured. And this is this truce dissolved overnight. Were hearing more and more of firearms being used by both sides and this is really a worrisome development. This is how that death toll can rise so quickly and our own reporters on the ground seeing that with their eyes, bloodied bodies, lifeless bodies in the lobby of a hotel there turned into something of a makeshift hospital. Now president obama commented on this yesterday during his trip to mexico. He and other u. S. Officials very much placing the responsibility on the Ukrainian Government. Heres what he had to say. We expect the Ukrainian Government to show restraint, to not resort to violence in dealing with peaceful protesters. For americans to understand why this is important, we have to understand this is a brewing war, civil war arguably, if it gets to that stage, right on europes doorstep. This is not a million miles away. This is right within europe. Its becoming more and more of a battle between east and west. The two sides here, one feels the pull of europe. The other side feels the pull of russia. And russia playing a big part here. Vladimir putin does not want to see the ukraine fall out of a sphere of influence. A lot of accusations of russian involvement on the ground as well. Its a real crisis, and it really is something that americans need to be watching. And its ironic because hundreds of miles to the east is sochi where ukrainian athletes are taking part in the olympics, an event meant to celebrate National Unity and they are getting set to go home to this. Two members of the Ukrainian Ski Team decided to go home. The Olympic Committee has said that they respect ukrainian athletes decisions to choose to go if they want to. We also heard from sergei bupka who spoke to cnn mean was a legendary ukrainian pole vaulter. He said hes urging restraint from both sides. And he said his country in his words is on the brink of catastrophe. One thing were not seeing anymore, some of those ukrainian athletes have been wearing black arm bands to show support for the victims back home. Theyre not doing that anymore. They met with the international Olympic Committee. The Ukrainian Olympic Team and decided there are other ways to show their support. They had a moment of silence in the Olympic Village but certainly, in their eyes turning home to what is a real tragedy going on and not far away from the olympics. Jim sciutto, many thinks. Nine minutes past the hour. 35 members of a Church Youth Group were injured last night when the second floor of an Activity Center came crashing down upon them. It happened at the Freedom Baptist Church in mississippi. Six people sent to the hospital. Officials say none of their injuries are life threatening. A new leak has been discovered at the Japanese Nuclear reactor badly damaged in an earthquake and tsunami nearly three years ago. Officials at the fukushima plant say 26 gallons of radioactive water leaked out of a contaminated water tank and was leaked into the ground. The university of maryland hacked the school says records for 310,000 students, faculty and staff were stolen, including Social Security numbers, birth dates and university i. D. Numbers. School Officials Say no Financial Data was taken. State and federal officials now investigating. Bank of america Ceo Brian Moynihan is getting a 17 raise for a 14 million paycheck in 2013. Good pay for a wellrun bank . Not if you ask their customers. Bank of america came in dead last in the American Consumer satisfaction indexs ranking of large commercial banks last year. Is the banks third year in a row in last place. A little bit of cosmic justice in Silicon Valley. Check out these tweets from brian acton. Got denied by twitter headquarters. Thats okay. Would have been a long commute. A couple months later, facebook turned me down. A great opportunity to connect with some fantastic people. Looking ford lifes next adventure. Both twitter and facebook turned him down for a job but that was so 2009 and, boy, how times changed. Acton, along with his partner are now newly minted billionaires after facebook paid 19 billion for their messaging service whatsapp. It allows users to send text messages, videos and photos all without paying any pesky fees to your mobile provider. Zane asher is live to tell us more. Good morning. Yes, i think what shocked most people is the price that facebook is willing to pay. 19 billion. The most expensive deal facebook has ever made especially when you compare it to instagram. Only paid 1 billion for instagram. I say only. Also, really, i want to show people why this deal is important. Why is facebook willing to spend this kind of money. Whatsapp is the most popular messaging app for smartphones out there. Its not that big in the u. S. But huge in developing countries and emerging markets because you can actually send these messages over broadband so when you communicate with people in other countries its basically free. So you arent spending money on text messaging fees. But also, for the most part, its free but some users in some markets do end up paying 1 a year. I wanted to show you this chart as well. Take a look at this chart. This sums up why this deal is attractive for facebook. Its grown over the past four or five years. Its only been around four or five years. In the past two or three years, this company has shot up like a rocket adding about 100 million users on average every single year. Currently stands bat 400 million users. This is really about facebook scooping up competition. It wants to maintain dominance in the mobile world. That is important to facebook. But it also wants to expand internationally as well. Those two things are whatsapp has down to a t. Zain asher, thanks. Fighting in Congress Nothing new. Soon our leaders in washington may have a new fight on their hands with us. Theres a new petition from moveon. Org calling on congress to give up their paychecks all 174,000 of it if they do not plan on passing any new laws this year. Last year you might remember they hit a new low passing the fewest laws in modern history. Nearly 30,000 americans think this is a good idea for them to give up their paychecks and have put to paper and signed the petition. And you also remember back in december, cnn orc poll found twothirds said this is the Worst Congress of their lifetime. So will this petition spur congress to action . Ill let you decide that one. Still to come the gap between the 1 and the 99 grows ever wider, the treasury secretary is throwing his hat into the ring in the fight over the minimum wage. He sat down with Christine Romans for an exclusive interview. Hi, christine. Hi, carol. He said in this economy, he sees a decided arc of progress, but a lot more work needs to be done. And what does he think will fix the income inequality in this country . Ill tell you right after the break. [ cellphone dings ] [ nephew ] hi heath. I cant wait to see you win gold bye. [ male announcer ] there when you need it. At t. The nations most reliable 4g lte network. To you are here. Man, [ male announcer ] there when you need it. That life exists and identity. That the powerful play goes on, and you may contribute a verse. That the powerful play goes on, and you may contribute a verse. What will your verse be . I takbecause you cant beatrning for my frzero heartburn. N. Woo hoo [ male announcer ] prilosec otc is the number one doctor recommended frequent heartburn medicine for 8 straight years. One pill each morning. 24 hours. Zero heartburn. As the fight over income inequality rages on, treasure signature jack lew says raising the minimum wage to 10. 10 an hour is the right thing to do. He sat down with our Christine Romans for an exclusive tv interview. What else did he say . Hi there. The economy is improving. A decided arc of progress, he said, carol. But we did talk an awful lot about that minimum wage issue. He said even though theres been some thawing in the relationships in washington, get something progress on the farm bill, get something progress on appropriations bill, and the like, raising the debt ceiling, they still have a lot of work to do and hed like to get that minimum wage raised. Its an income justice issue in this country. Thats his view there. You know, i asked him specifically about something that one of his predecessors has been writing about. Larry summers has been writing about how the u. S. Economy is becoming a Downton Abbey economy. Think of that. Where you have the super rich, the top 1 who have so much of the power and money in the country and everyone else who works for them or everyone else at the bottom of the rung. I asked him, are we at risk of becoming a Downton Abbey economy. Heres what he said, carol. I dont think we have to be. I mean, i think its more of a prediction than it is an assessment. And i think if you do the right things, we can create opportunity. One thing about American People generally is if they are doing well, they dont begrudge other people doing well. They want a chance to have a job and we can solve that problem. We can solve that problem by training and investment in the right kinds of education. He said, carol, this income inequality problem in this country youll not fix in one year whats taken some 30 years to kind of develop here. I mean he is concerned about it but keeps going back to this idea of training the right kinds of skills, community colleges. He points out there are 3 million job openings in the country right now. Its true. 3 million job openings, but ceos complain they dont have workers with the right skills. We have to fix that mismatch. He says thats something that the government can help with, carol. Christine romans, many thanks. Still to come, its the pipeline that is struggling to get built. Now theres a new problem for the Keystone Pipeline. And what court and how one court ruling could halt everything. I quit smoking. Ive quit for 75 days. 15 days, but not in a row. For the first time, you can use nicorette. Even if you slip up. So you can reach your goal. [ male announcer ] now, quit on your own terms with nicorette or nicoderm cq. I have a cold with this annoying runny nose. [ sniffles ] i better take something. [ male announcer ] dayquil cold and flu doesnt treat all that. It doesnt . [ male announcer ] alkaseltzer plus fights your worst cold symptoms plus has a fastacting antihistamine. 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That means the Keystone Pipelines progress has come to a screeching halt because 200 miles of that proposed pipeline is supposed to run from canada through nebraska, to the gulf of mexico. Many republicans are bound to be upset by this ruling because they say the Keystone Pipeline would create thousands of jobs and oil independence. With me now randy thomas, one of the land owners who filed suit to keep the Keystone Pipeline from running through his ranch. Welcome. Thank you. Thanks for having me on. Im glad y