N steps away from the kremlin. A Russian Television station says it appears to show the killing as it happened. You can see it in this time lapse video. Nemtsov and two women walking together. Notice the snow flou plow on the street. Later the pair is blocked by the snowplow. Next the person is seen walking on the road and getting in to a car behind the snowplow. The car speeds off and the video appears 0 to show one person at the scene presumed to be Boris Nemtsovs companion. Cnn cannot confirm the authenticity of the video. Putin wrote, quote, Boris Nemtsov left his mark on the history of rugg russia in politics and public life. He always stated his point of view. Putin vowed his killers would be properly punished. Boris nemtsov was promoting an opposition rally hours before he was killed. It has turned to a march of mourning. We go live to Senior International correspondent Matthew Chance in moscow where thousands are expected to attend today. Whats the mood there . Reporter very somber mood george. People of moscow turning out at this this location on the bridge in the shadow of the kremlin, where Boris Nemtsov was gunned down on friday evening. People have been coming laying flowers, paying their respects. We have been reporting throughout the evening and its ban constant stream of people coming weeping out of compassion for what happened here. It has really touched a nerve the killing of this opposition figure. He spoke about the corruption of russia the brutality of russia and many people dis missed that tried to move on with their lives. The fact hes been gunned down now, so close to the kremlin sends a powerful message that if you oppose the kremlin this is what could happen to you. Obviously, its touched a nerve amongst many people. Thats why we are seeing such an outpouring. Later on today, there was going to be an opposition rally against the war in ukraine and the Economic Situation in russia. Thats been cancelled and transformed in to a march through the streets of the center of the russian capital in mourning for Boris Nemtsov, one of the countrys most prominent opposition figures, george . Matthew, you are a photojournalist. The flowers, the kremlin in the background. Symbolic as you mentioned. A question for people looking in to this investigation. Whats the expectation . What are people saying . Do they expect this will be a fair thorough investigation and will they get to the bottom of who did this . Well, i mean certainly the calls are for a fair thorough investigation. The fact is russia has a very checkered history in getting to the bottom of political killings. The journalist killed shot down in her Apartment Building in moscow in 2006 was a prominent critic. Theres been people arrested and sent to prison for that killing but nobody who ordered the murder has been brought to justice. And another man poisoned in 2006 with the radioactive isotope. Nobodys been prosecuted for his killing either. Russia has a checkered history of getting to the bottom of these political killings. Having said that the russian authorities have said they will try their best to do that. Even vladimir putten whom with opposition figures point the finger of blame at for being responsibility fbler this. He sent a message to the mother of Boris Nemtsov saying he shares her grief and pledging to her he will bring those responsible to justice. Whether or not that will happen though remains the question mark hanging over this terrible crime. Matthew chance joining us live in moscow. Thank you for the reporting there. Boris nemtsov was also outspoken about russias alleged dealings in ukraine. An antirussian demonstration is expected to take place in kiev later today. Demonstrators are calling for the release of the pilot held in russia since june. We are joined live. If we could bridge the gap to the feelings there about mr. Boris nemtsov. Certainly we know the ukrainian president has his theories why mr. Nemtsov was killed. Theres certainly been an outpouring of grier here also about the assassination of Boris Nemtsov with people laying flowers and theying respects outside of the russian embassy. The rally that you talked about was initially meant to be a prayer in honor of a Ukrainian Pilot whos being held cappive in a russian jail and shes on a Hunger Strike. The russians accuse her of having been behind the killing of two russian journalists last summer. Kiev accuses russia of holding her as a prisoner of war. I think what you will see now at this rally or this prayer will be also held in commemoration of Boris Nemtsov, who the ukrainian president described as a great friend to the ukraine, a great patriot of russia and someone who acted as a bridge between the two countries. He said he had a conversation with Boris Nemtsov a couple of weeks back in which nemtsov said he planned to make public evidence about the Russian Military the Russian Militarys involvement in Eastern Ukraine and mr. Poroshenko said that is what his executioners were very, very afraid of. Russia, of course has always denied its troops are involved in the conflict of Eastern Ukraine. Yesterday, therefore, a day of grief really for both of those situations. The fact this terrible political assassination or possibly politically motivated assassination in russia and also for this girl this Ukrainian Pilot whos really become something of a National Heroine in this country and a symbol of what many in the country believe to be russian oppression of ukrainian people. George . Diana, how optimistic are people in ukraine about seeing her release . Shes been held for quite sometime now. Not very optimistic. She has also expressed that sentiment after a series of Court Hearings where she has asked to be released. Nothing has come of it. Theres also a great deal of International Pressure on russia to release her. Lets look at the circumstances of her detention. Russia alleges that she was a refugee, who had sought asylum in russia. And therefore she was dick taned on russian territory when she sought asylum. She was fighting for one of the ukrainian volunteer battalions as she says to defend her country against russian invasion. There is video of when shem she was picked up by pro russian rebels and interrogated by them prior to her arrival in russia. There is a confusing period as to how it was she crossed in to russia. Kiev says she was kidnapped and is being held as a prisoner of war, a prison of war within a country who says they are not at war with ukraine. None of this International Pressure none of the pressure from kiev has so far made any difference. Her lawyers are still fighting for her release. She says she will continue this Hunger Strike until she is either allowed back to the ukraine or she will die in prison. Shes being at the moment given liquids through an intravenous drip but she is past her 80th day in her Hunger Strike and her lawyer says she is very weak. We move to the country of venezuela. The president there claims u. S. Citizens have been arrested for spying on his country. Speaking at a socalled antiimperialist rally on saturday the maduro say one is a pilot. Journalist phil gunson was at the rally and reports the specifics on this purported arrests are lacking. Listen. He said a u. S. Pilot of latino origin was arrested a few days ago in the southwest, close though colombian border. Said he had been had all sorts of documentation on him that he had been involved in recruitment, that he was one of several u. S. Citizens picked up in recent days. Apparently involved in espionage and recruiting people for the alleged coup plot. The coup plot itself is rather sketchy. Supposedly involves a number of opposition figures. One the mayor of caracas was thrown in jail last week on the same grounds but Details Remain very sketchy. Maduros list includes several prominent u. S. Officials who are now banned from entering the country of venezuela claiming they were involved in a quote terrorist action. The list including former george w. Bush dick cheney and members of congress. This is a month after the state department imposes restrictions on officials believed to be responsible for human rights abuses. A glimmer of hope for some Asyrian Christians kidnapped from isis and it is coming from an unlikely place. The isis member known around the world as jihadi john has been identified. Tech experts say he has covered his tracks very well. From paris welcome back. If you are joining us there to cnn newsroom. A new ruling should shake up the future of middle east peace negotiations. An Egyptian Court designated hamas, the governing body of the gaza strip as a terrorist organization. We look at the possible implications on egypts role as a peace broker between israel and palestinians. This is a very damming verdict by the court of urgent matters. What it means is very vague. According to tradition, matters of International Relations is dealt with by the executive branch not the judiciary. A Terrorism Law stipulates the court doesnt have jurisdiction. That belongs to the general prosecutor and appeals court. What hamas is accused of is aiding insurgency that killed hundreds of security personnel. Also being part of a 2011 jailbreak that freed members of the Muslim Brotherhood during egypts revolution. The Muslim Brotherhood is considered a terrorist organization here in egypt. Hamas belongs to the Muslim Brotherhood. For egypt they are two in the same. Hamas denies these accusations and condemns this verdict. Translator it is a shocking dangerous decision that targets the Palestinian People and the Palestinian Resistance that is defending the dignity of palestine and the arab nation. It also goes against the rules as it relates to the israeli enemy as a friend and to hamas, the Palestinian People and the Palestinian Resistance as enemy. This decision will never harm hamas, and its victories or the stand of its leaders, but it will directly contaminate the reputation of egypt. This does create a very dangerous situation. Egypt has been the broker for peace between hamas and israel during their past thee wars. Egypt is also a broker in interpalestinian politics. The question is who will pick up the mantle that all parties can agree on . For now, this ruling can be appeal. Ian lee, cnn, cairo. U. S. And Coalition Forces launched 20 new air strikes against isis in both syria and iraq. According to the combined joint task force, u. S. And Coalition Warplanes hit six targets here the syrian city of kobani on saturday. In iraq air strikes on five different cities including alassad and the isiscontrolled town of mosul. In Northern Syria, a self proclaimed isis court is recording the release of 29 syrian christians. According to the syrian observatory for human rights. The hostages are part of a group of more than 200 people captured during the attacks on villages in Northern Syria this week. The fate of the remaining hostages has not bb decided. Authorities are having trouble finding out more about gee had di john. Identified this week as mohammed e. His Online Presence is limited at best. Le to do everything but you can get close. It takes persistence. It takes understanding of where the information about you originates and how it gets put in to different searchable databases and Online Services. It takes some amount of knowledge, research and actual patience to remove your identity from various Online Services where it is possible to do. Cnn could only find a single tweet referencing him. A tweet from a london court to notify the public about his court appearance. He was later found not guilty of theft charges. He graduated from the university of westminster, here in london with a degree in computer engineering. So he may be more adept at keeping a low internet profile or sweeping up his tracks online. A slew of Services Online promises to help erase you, account killer has a large database of sites and quickly gets you to their delete features. Just delete me alerts you anytime you are on a site that might need to be purchased and another lets you type in whatever user names you have used. When there is no way to close a account people look to falsify the name listed. Eu citizens like emwazi can fill out an online form to wipe traces of search results they would rather not appear online. What you do is get in trouble with the law or file complaints that could be entered in to public record. Emwazi appears to have done that questioning help from a group called c. A g. E. To protest his treatment by authorities but he used a pseudonym keeping his true name off the interit net. While most of society is seemingly obsessed with sharing everything on social media, another wave of people like Mohammad Emwazi may leave it behind without a trace. Samuel burke, cnn, london. A u. S. Town of just 50 residents lost nearly 20 of its population in a killing spree that has investigators searching for answers. Still ahead this hour we will take a look at the missouri mass shootings. Septic system breakdowns affect over 1 million homes a year and can cost thousands of dollars to repair. Thankfully, ridx has enzymes to break down waste and timereleased bacteria to reduce tank buildup. Ridx. 1 in septic maintenance. And now for rvs too chicago as ice and snow get ready to plow across the United States again. And wind and rain ready to blast parts of europe. Karen maginnis is at the weather center. When will people get a break . We have three more weeks before spring officially arrives in the northern hemisphere. Look across the Broad Spectrum of europe. Theres snow reported right now in munich. Later in the day in to tuesday, well expect some of the snow across the highlands in scotland also in northern ireland, as well. Looks like some of the west coast could be battered by high winds, as well. We are looking at heavy snowfall across the alps as well. Look at the winds we are expecting in the next 24 to 48 hours. This is the first in two backtoback situations. We saw that in the past 24 hours. The rainfall totals are going to be adding up especially as we go in to wales, also across southwestern ireland. For the United States, this is what we can expect heres one more view as to how high the winds were recorded in the past 24 hours. 126 kilometers per hour. Look at ireland, we had one report of 115 kilometers per hour. A very stiff breeze there. I just checked some of the local conditions across southern britain and were looking at partly cloudy to mostly sunny skies, but the weather will begin to deteriorate later in the afternoon. Heres the snow for the ohio river valley. These amounts in inches. It will be the southern rockies that could be blasted by several feet or just under a meter of snowfall. Even for boston, the snow will be coming in. Also for washington, d. C. Winter weather advisories are out and for the latest round of snow george it looks like this could push them in to the record books. We could see record seasonal snowfall for boston in the next day or so. Karen, in a month will we be talking about sun in boston or no . Lets 0 hope so. Thank you so much. Former star of one of hbos biggest hits entourage has a new project. He wants to your help to find money for some whales. What do you do with a blue whale . No idea. With you cheer them up. What do you do with a lonely whale. I dont know. You fund a kick starter so we can find him. Reporter thats adrian. You may know him as vinnie from the show entourage. What do you say, turtle . Reporter why is he telling megawhale jokes . It comes down to a movie he wants to make about a whale nicknamed 52. A whale called 52 because he speaks at 52 hertz where other whales speak on a different wave length. He has been calling out his entire life without ever once receiving a response. That is depressing. It is certainly lonely. Reporter a story that dates back to 1989 when an oceanographic researcher picked up a 52 hertz frequency in the ocean. The scientist, dr. William watkins determined the sound belonged to a oneofakind whale whose call couldnt be heard by any other whales. He spent years tracking 52 also known as the loneliest whale in the world. Imagine calling out and nobody responding. Imagine feeling like you are being misunderstood. Such a beautiful story and has so much resonance with us as human beings. Its such a unique touching subject to think there is somebody out there alone, floating about. Reporter the story strikes a chord and he wants to move behind the camera to capture it. We are here on kick starter to ask for your help in funding the search. Reporter they are on a quest to tell 52s story, collect data and make a film. We are looking to fund a scientific expedition that will give i us an opportunity to study hybrid whales and the affects of ocean Noise Pollution on these majestic creatures. For you personall