[ gunfire ] its also where the masked men took over the police headquarters. This video is all new in to the cnn newsroom. Security forces have said that they will but they saw no signs of a large ukrainian force. And this video just in this afternoon. Its social media video that reportedly shows proukraine protesters beaten and bloody. Cnn cannot authenticate the video. Lets take you to nick paton walsh. The situation is very volatile right now. What is the governments response to all of this violence . Reporter well, weve seen a really troubling violence. An amnesty who is willing to lay down their arms by 9 00 tomorrow morning local time but also the promise of military intervention to stop what they call terrorist actions here. Translator we did everything to avoid human victims but we are ready to give an answer to all attempts at invasion, destabilization and the council took the decision with the participation of the armed forces of ukraine. We wont let russia repeat the scenario in the Eastern Region of ukraine. For those who didnt shoot our soldiers by monday, i signed a decree to guarantee they will not receive any punishment for their actions. Reporter well, in that speech, too, there was the offer of decentralization, which is a bit of what they really want, and its deeply frustrating. Weve been going round. The cities that weve been referring to almost around where im standing it seems police stations are voting for prorussian militants at first and then to occupy the buildings. The Ukrainian Security forces say based on the launched and didnt get past the out skirts of the town. Video showing in fact from social media that the apc sent in the personnel and they were in a gun exchange outside of the towns. Then they explained in a decision to pass any future operations to military here but the real question lurking is can ukraine muster enough force to resist these prorussia militants and if they decide that they are able to do that, what is the response from russia . He has said that they must stop creating war against its own people. Some of the prorussian supporters are having their rights refused. Nick paton walsh, thank you so much. What is the Obama Administration saying about the latest moves in ukraine . Here is u. N. Ambassador susan power on abcs this week. It has all of the telltale signs that we saw in crime. Theres nothing grassroots seeming about it. If actions like what weve seen continue, youre going to see a mp ramping up of those sanctions. The white house says, quote, the Vice President will underscore the United States strong support for United Democratic ukraine that makes its own choices about its future path. The search area for missing flight 370 is now getting bigger after days of shrinking. Today Officials Say crews were searching a 22,000 square mile area in the indian ocean. Thats expanded 40 from yesterdays search area. The big focus is still trying to find the pings that crews heard last week which are consistent with a planes black box. Well, nothing credible has been heard since tuesday. Will ripley is following every surge in perth. Whats the latest on the efforts today and why is the search area being expanded . Reporter yes, as you mentioned, were on day 38 here and planes will be taking off shortly. The reason the visual search area has expanded, they continue to refine this data. They are looking at the currents and analyzing where they think the debris field may have floated from the time they think the plane went into the indian ocean until now. Keep in mind, its a moving target. These are this is debris that would be affected by weather conditions, by the currents, and really its a guess. Its an educated guess as to where this might be. The planes continue to search one area, dont find anything, they move on to the next. Thats the visual search happening and what has gotten so much attention, especially over the last week, is the underwater search where we have the u. S. Navys listening device, the towed pinger locator behind the australian ship. We have Australian Air force jets that are dropping the sonobuoys and then we have a british ship in that area listening. All of them trying to see if there is any more ping to be heard from the inflight data recorders. We have four pings. Two they believe was coming from some sort of black box and the Data Analysis on the other two pings is still pending. Those pings were much weaker. At some point soon, fred, the decision is going to have to be made, what are we going to do . Are we going to switch this search . In other words, are search crews going to start deploying the underwater submersible with side scan sonar . Once they decide to do that, this whole process becomes even slower and more grueling than it already is. Thank you so much. Will ripley, thank you. Well talk more about that later on in the hour. So up next, more on flight 370. Ill bring in our panel and ask them if they think is a big step backwards in the search for the 777. Could save you fifteen percent or more on car insurance. S Everybody Knows that. Well, did you know bad news doesnt always travel fast . clears throat hi mister tompkins. Todd . Youre fired. Well, gotta run. Geico. Fifteen minutes could save you fifteen percent or more. All right. Searchers for flight 370 are once again looking in an expanded area after more study of ocean currents and other data, the search area is now some 40 larger than it was yesterday. So is this a case of taking two steps back in the search for the plane . Lets go now to our panel at this hour. Bob francis is the former vice chairman of the ntsb, cnn aviation analyst mary skchiavo represents families in airline disasters. And andrew carr is president of underwater search and survey. Okay. So more study of currents and data has led them to expand the search area to about 22,000 square miles. What does this mean to you, bob . Is this a setback or is this encouraging . I think its encouraging. Why . Well, because they are clearly getting more and more confidence in the equipment that they are using to try to pin down where the aircraft went in. So they are more comfortable with what they have now. The fact that it is larger than what it was before, that just means that obviously they are more confident in the accuracy of that and its progress. For those of us not in the business of this aviation expertise as all of you are, i think most of us would think that to triangulate and search the area of the field, that would be the direction that these searchers would want to go. Why is this to boost the confidence to expand the area, to make it bigger . Well, i also think that, you know, the pinger batteries have undoubtedly stopped at this point so what they have from under the water is all they have and i suspect that they were also going to take sort of one last effort and really do an extra push and probably push the envelope on the search area to see if just by any chance they couldnt expand the area and maybe hopefully see some wreckage before they start with those bluefins under water because at that point there would be no more searching for pings and that would mean a very long underwater search or not, if they get lucky. Lets go out there and comb it once more for that wreckage. Arnold, it would seem that because there has not been a ping in now five days, that clearly the batteries must be dead and perhaps there isnt going to be this pinging sound. Why not just go ahead and put in the bluefins . I would think that they are trying a little harder. The batteries weaken. They dont stop abruptly. So if you can bring a vehicle or a probe down close, you can see it when you get much closer, maybe a kilometer or two away and then, of course, its going to gradually turn to nothing. I have one comment, though, on the search area, i was concerned about the expanding search area but as far as i understand, thats for debris on the sea surface and its a good thing to do. You really need verification. Right now its almost like dealing with a third party, the ping. And surface debris hindcast through good oceanography and meterology will help the search area. When you talk about the aerial searches because of drift, if there is to be debris, youre saying it would have traveled further and that helped justify this 22,000 squaremile area . Yes. Thats as i understand it. And frankly, the debris usually is at the sea surface from the event where the aircraft meets the water and then after that little unknown debris would come to the surface. You really have to expand the area to look at the conditions. Mary, as we enter a new search week and were entering week five now of this area, what do you want to see happen in this week . What kind of assets do you believe its time to get at the ready to take this search to another level . Well, i think at this point go ahead. I think that they are undoubtedly ready for the underwater search because if the batteries on the pingers are really dead, then theres nothing more to be gained once they assure themselves that that has happened and they will be readying for the underwater party. Weve heard about them getting a logistic ship from the United States to help support the mission. That could be slow going. Its going to take a long time just to get the submersibles deployed. They have to bring them back up and unload the data. Its going to be slow going. The fastest that they can go, i understand, is 40 you miles a day. This is going to be much slower because they have to pick their way through the great depth and try to get clear pictures. So i think they are getting ready for that. I would be surprised if that is what takes place this week. Bob, what do you want to see this week . I certainly want to see them proceeding with that. I also hope that throughout all of this we wont lose sight of the import of moving to new technologies that will allow us to avoid what we are going through now and what we went through with air france and to be able to have the aircraft downloading through satellites what is going on on either a periodic basis or when there is a problem. That wont apply to all aircraft. It will apply only to aircraft presumably that are doing entrance Ocean Yan Nick flights. But i hope that the media see of the search that is going on does not divert us from the import of making sure this doesnt happen again. Arnold, do you see this week as a potential turning point, meaning, the readying of new devices that will be employed to help with this search . Yes. Its really coming time to launch the underwater vehicle, the unmanned underwater vehicle and set up a severarch pattern. Before they do that, they have to set up waypoints with hydrophones located so it can mow the lawn and really track prescribed areas of high priority. All right, arnold, bob, mary, thank you so much. Ill check back with you later on in this hour. And well have much more on this mystery surrounding flight 370. First, a fastmoving wildfire in chile destroys hundreds of homes. And Oscar Pistorius is expected ba expected back on the stand in his murder trial this week. Co sometimes you dont know you need a hotel room until youre sure you do. Bartender thanks, captain obvious. Co which is why i put the hotels. Com mobile app on my mobile phone. Anyone need a coupon . I dont. Well get back to the mystery surrounding flight 370 in a moment. First, other news. Heres nick val leencia. The ntsb is investigating the cause between a bus and fedex truck. Officials say blood samples from both drivers could provide information about whether drugs or alcohols may have been in their systems. South africa, monday, marks week six in the Oscar Pistorius trial and the sixth day of pistorius testifying. He points to whether steenkamp was heard screaming before she was killed. In chile, at least 11 people have died as fastmoving wildfires continue to spread there. More than 1200 wildfires have battling the fires. Authorities call it one of the worst fires in the countrys history. And more cruise passengers are getting sick. More than 120 people have come down with an illness. The cdc is trying to figure out what caused it. Meanwhile, another ship, princess crowned princess was hit by illness. More than 150 people got sick before it returned to port yesterday. There has been a new report issued on climate change. It says it may not be too late to stop the consequences of global warming. Governments will have to act quickly and aggressively to cut the Greenhouse Gas emissions. Tuesday marks one year since the Boston Marathon bombings. As the city prepares for the big race on april 21st, they have joined together to make sure that they are boston strong. Fans are invited to come to the site. One photo will be selected as the next weeks issue. 9,000 more runners this year than last year. A lot of people affected there in boston by the bombing. Even if they werent on the finish line. The community was shut down for so long. Absolutely. And that big picture, that brought together a lot of people, people who traditionally go to the races, a lot ofress departments, First Responders as well wearing blue and yellow, which are colors of the Boston Marathon. It was a nice moment, a real prelude to what will be a really touching and bittersweet kind of anniversary this coming tuesday. Thanks, nick. You got it. Still trying to get answers on the missing plane and its been an increasingly difficult task. You dont have to push. Tensions with malaysian officials are reaching a boiling point. What questions they dont want to answer. Next. Gunderman group is a go. Yes not just a start up. An upstart. Gotta get going. Gotta be good. Good . Good. Growth is the goal. How do we do that . I talked to ups. Theyll help us out. New technology. Smart advice. We focus on the business and they take care of the logistics. Ups . Good going. We get good. Thats great. Great. Great. Great. Great. Great. Great. Great. Great. all great i love logistics. How much money do you think youll need when you retire . Then we gave each person a ribbon to show how many years that amount might last. I was trying to, like, pull it a little further. [ woman ] got me to 70 years old. Im going to have to rethink this thing. Its hard to imagine how much well need for a retirement that could last 30 years or more. So maybe we need to approach things differently, if we want to be ready for a longer retirement. [ female announcer ] with five perfectly sweetened whole grains. You cant help but see the good. A seven day cruise to alaska or the caribbean from just 549. Thats seven days to either marvel at mayan ruins. Savor the very best local flavors. Or sail in glistening glacier bay. With a cruise line voted best in alaska. A seven day cruise to alaska or the caribbean from just 549. Call your travel agent or 1. 888. Book. Now for this limited time offer. Princess cruises, come back new. Hello again. Im fredricka whitfield. Search crews are combing through an expanded area. The red boxes on this map youre about to see shows the visual search area today and all of the gray spots are where crews have already searched. The one shred of evidence, the four pings consistent with black boxes havent been heard since tuesday. This whole mystery has led to more questions than answers and the malaysian government has been unable to release any more details. Nick robertson gives his firsthand account between officials and journalists. Reporter mr. Minister, how are you . Im happy to see you later. Im just doing my walk about. Reporter weve requested an interview many times. With that, the man heading the hunt for missing flight 370 is off. The defense minister and acting transport minister is hosting an International Arms fair. From helicopters to tanks to guns. Reporters invited along. Some questions apparently not so welcome. You dont have to push. As his tour continues, his aides advise us to wait for his press conference. Thats good, because the question just refused to answer, when they told civilians they picked up flight 370 on their radar, is a contested question. Precisely when did the military inform the department of Civil Aviation about what they saw on the radar . I said earlier reporter no answer, then. He doesnt want flight 370 questions. Buts a the conference continues, it turns out some flight 370 questions are okay. Tell us, are you any closer to deciding who will extract the data from the black box . Yes, we are getting closer to that issue. The attorney general in the uk is discussing exactly that. Two days ago you said even the passengers were under investigation but a week ago the ig of the police said passengers cleared from the investigation. Which is it . Let me clarify. Unless we find more information, specifically on data in the black box, i dont think any chief of police will be in a position to say that they are cleared. Reporter are you in a position to rule out terrorism . We can have a separate session with cnn later. Reporter questions still waiting to be answered. Nic robertson, kuala lumpur, malaysia. Thanks, nic. Lets bring back the panel, bob francis, mary schiavo and robert carr. Is this a case of internal agencies not working together or is it that its an unusual set of circumstances and not everyone is communicating at their best . Bob, you first. Well, i think the malaysian performance since the beginning has been has been very, very unfortunate and weak. One of the things i was thinking about today is i wonder how specifically they have worked with the french after the air france accident or the u. S. After the swiss air accident and really talked to them in a meaningful way. I know that there is an ntsb group out in kuala lumpur and i would wonder, given the way that the malaysians are acting, whether they are benefiting from that as much as they might. So mary, is there a way in which the malaysian authorities can recover from this . Because certainly its been very messy at the beginning and i guess it could only worsen but at what point and how can they recover from this since there are still no clear answers about anything the circumstances of this flight . I think the best thing they can do at this point is appoint the task force to lead the investigation further even after recovery of the black boxes because when did the military tell them that they had information . When did they have the inmarsat data and tell the world to stop dating in the South China Sea . There are so many disconnects here that i think their credibility was shot but also leads me to believe that they have internal governor mental problems which will probably cloud the investigation. For example, t