There one with a machete and one girl saying theyre stopping everyone, theyre stopping people. We believe we are experiencing a new trend in the threat we face as terrorism breeds terrorism. A terrorist rampage through london. Im Martin Savage in atlanta. This is our special coverage. Clarissa ward is in london. Shell join me momentarily. We want to welcome our viewers in the u. S. And around the world. We are following new developments in the investigation into londons deadly terror attack. I. T. N. Is reporting this video. They say it comes from an eyewitness who says that these are the three attackers rooming through borouwho used the ram intentionally running down pedestrians. Seven people are dead. 48 injured. Those attackers were shot and killed by police. 12 additional people have been arrested. It is the second terror attack in the uk in just 12 days. Although there are no initial indications that are connected, british Prime Minister theresa may says they were carried out because of, quote, evil ideology of islamist extremist. But brits are vowing to not live in fear. A benefit concert for the victims of last months attack in neighboring manchester is not going to be canceled and it definitely will not be silenced. Reporter we have a team of reporters covering all angles of this story. Were here now in londons Borough Market. This was scene of mayhem last night. Im joined by cnn Senior National correspondent alex marquart. What are you learning . Theyre making process pro congre progress in identifying the attackers. Theyre the only three involved in the attack. Theyre saying they dont believe any more elements involved in this attack are out there. Thats why theyre maintaining the alert level at the second highest. Theyve arrested 12 people possibly connected with these attackers. The commissioner of the metropolitan police shopoke wit police. We have established the venue during the attack was a white rental van that was recently hired by one of the attackers. As our understanding grows, we now understand that the van at London Bridge started the attack at 2158 hours yesterday as he went from north to south on the river with members of the public calling police a few minutes later. The van collided with pedestrians before being abandoned where attackers armed with knives continued into the Borough Market area stabbing numerous people. The attackers were then confronted by the Firearms Officers and i confirm that eight police Firearms Officers discharged their weapons. Reporter keep in mind here in the uk most Police Officers dont carry firearms. They carried 50 arms into those attackers what the commissioner called an unprecedented amount of firepower. The reason they fired that many round system because they believed they were wearing suicide vests. As it turned out they were wearing fake suicide vests. In the exchange of gunfire, one public member was wounded. The death toll stands at seven. 48 people who are wounded, 21 critically wounded so that death toll still could rise. Alex, thank you. Well be checking in with some of the wounded later on. Lets bring in Cnn International diplomatic editor nic robertson. Nic, police have conducted several raids what are they looking for and how many have they taken in custody . Reporter there are several things going on. Police are asking organizations if they have pictures of the attackers and picks sill late the faces. They dont want to provide any further information on the people behind the attack because they want to be able to get on and arrest as many people as aassociated with these men as people. They dont want to give an opportunity for any of those who might have been involved to escape. The police have arrested 12 people in the east of london. There is a very big and strong vibrant Muslim Community in the east of london. But it is telling that the police have made their first arrest there. Which perhaps gives us the best indication that we have so far of maybe where these three attackers came from. Of course, we cant say that we cant say that with a surety. The Westminster Bridge attacker came from outside of london. He had lived most recently in birmingham. But in this particular case, these arrests do seem to indicate that perhaps these three attackers did come from london. But the police are not providing any information about that. Which is quite normal. Ive spoken with a local one who came here today and i was asking him specifically what about theresa may has said that in our communities she laid out her four ways to tackle this change in the Terror Threat in britain. She had said that there was too much tolerance of extremism in the communities and the one i spoke to said look, you cannot continue to blame and point the finger at muslim communities here because he said we have been talking about this for years. We are trying to stop this. Were doing our best in our communities. This is about everyone trying to work together. And interestingly, he like the Prime Minister pointed the finger of blame at recruitment not on mosques, but on the internet, the way that isis and other groups recruit on the internet. Of course perhaps the use of the internet by these three men may excuse me, may also provide the police with the clues that they need to continue this investigation. 12 arrests so far. Cl r clarissa, we cant expect more. Im just curious, because there seems to be every indication that the network was not larger than the three men, the attackers themselves who were shot. Yet weve seen 12 arrests. Yet there have been raids. Who are these 12 arrests if theyre not connected to a potential network . Its quite easy for our viewers to imagine that when the Police Make Arrests like this, then this is an indication that these 12 people will be connected in a participatory or at least a negative way. What we witnessed here f we look back to that westminster attack, the Police Arrested close to a dozen people, mostly in the birmingham area, some in other parts of the country. Within a week, one a week and a half they had released all but one of them. What the police seem to do, again, with the birmingham, if i just compare with the westminster arrest, the arrests that came immediately, the soonest arrest, the quickest arrest after the incident were the people excuse me again were the people that lived had lived most recently with the attackers. So is that the case here, that the police have gone to the addresses where these men lived and simply arrested to question to get a better background, a better understanding of the people most recently or most closely associated with the men. This is possibly whats happening. We dont know. The police of course at this stage in their investigation are keeping the details and their reasoning and rational and the results as well, keeping that very much to themselves. But its quite possible well see many of those who have been arrested already today released. But i think thats why we can expect more arrests as the police dig deeper into their lives. That circle of a Association Contact gets bigger because the police want to know who they were speaking to, who might have influenced them. Is there somebody else out there in the community that influenced these three men a month ago, two months ago, three months ago, five months ago . That has been influencing other young people and who are those other young people that may be influenced and they need to get to them. They need to know who they are. Thats the urgency of the situation here right now. These men may have acted alone, but their associates may, may be inspiring others. All right. Nic robertson, thank you so much. As always, martin, back to you in new york. Last nights attack makes nine terror incidents in europe since 2015. To talk about all of that we have our panel. Will is the managing director at the International Corporation protection group. Michael is the former director of the house intel committee. David rohde is online news director for the new yorker. Will, let me start with you. What more can governments do to try to prevent these kind of attacks . We have seen them. Weve seen attempts to try to block them. They still keep happening. I think, again, it is to a certain degree relative. I think we have to be quite prag pragmatic to a certain degree also about the number of attacks that materialize and have been followed by the various intelligence Government Agencies and Counter Terrorism capabilities. There is a lot of catching up that needs to be done. Some very significant attacks across europe. For us in the United Kingdom, 7 7 was very much our wakeup call. For france it was charley hebdo. Certainly the berlin christmas market. Theres a lot of catching up that needs to be done. Really the best efforts i would say most productively focused b would be in assessing and analyzing the cycle of the terrorist is a great deal more. One of the key elements is not only the point of recruitment, but radicalization and how that can be delivered in its various different forms. Where we may as society have to relinquish certain degrees of privacy to those agencies because it is becoming an insurmountable task, we need to be able to afford the able to be able to mask surveillance, particularly those individuals. Let me broaden this conversation. David, british Prime Minister theresa may today, by the way, vowed to crack down on the extremism thats fueling the terror attacks. You would expect her to say this, but the question is how does she really do that . Thats the problem. How do you define extremism in a legal sense that will allow british authorities to arrest someone before they carry out these attacks and not violate civil liberties. Its a real challenge. Theres really no consensus on somehow striking a balance between some surveillance in terms of what Technology Companies are allowing the government to do and what the public will accept. There was some talks about this under the obama administration, but there really wasnt much head way on it. Its evolved in a very extreme situation where the private sector says no surveillance whatsoever. There has to be total open. A consensus on that where you it was almost as if both sides dug their heels in. Michael, do you fear that there are risks for americans, both here in our own country but also traveling abroad given what youve seen now . Yeah, i do fear for that. Here in the United States, look, we dont vt problehave the prob they have in western europe because of their proximity to the middle east and isis itself. We say that but we also know this could come over the internet. It isnt like the physical form of a person from syria that plots in Great Britain. I was just going to say the same thing. Orlando and san bernardino, we are not immune. People can get radicalized via online. In fact, look, i think were coming for a reckoning here with technology and the needs of government to go after terrorists. David talked about the encryption debate. The confederates and terrorists have spoken vie encrypted applications on their smartphones. Governments want access to that. I think the most striking thing, at least i learned from Prime Minister mays speech this morning, was that she really like ended the internet safe zones to what were traditionally talking about in Counter Terrorism which is physical safe zones like afghanistan or syria for which we take military action. So these sort of technology and Law Enforcement issues i think are going to have to come to a head here in the not too distant future. Will, thats really a very fascinating point thats being made there. Im wondering, we see these small scale attacks. We see the one using a vehicle, using knives. This is something both al qaeda have been pushing for years and theyre doing it over the internet. The message is still getting through and clearly people are acting on it. Absolutely. There are certain legislations which are coming to effect in continental europe. Particularly germany is a good example where there are fines which are levied against isps that are allowing criminal content to remain online for more than 24 hours. Some of these fines are going up to 50 million euros. Universally we need to we need to sir vcup vent it. But its the widespread prop mitigation to try and insight or encourage those to carry out these attacks. The more that we can filter them into certain corners the easier it will be to come back. David, as we talked, one of the fears had always been that you had these people who went to fight in syria. They got the training and then they come home. Now we see thats not necessarily the case. Isis would say hey, dont come to syria. Stay where you are and launch attacks. We saw that in france. It appears we may see that in Great Britain. We could easily see that here. That is a very frightening thing when it comes to trying to stop it or not about it. That has occurred in the United States. There was the incident in ohio where a young man rammed a crowd. Didnt kill anyone. And whats really disturbing about the three attacks now in britain is the middle attacks that happened in manchester of a New York Times reporter that salman abedi, he travelled to lydia and met with the Islamic State and he was able to divide the very powerful and deadly bomb. Then you have the first attack of the three which was, you know, a home grown case. This is where the gentleman rksz y , you know, rammed his car into people in london. As there is progress, the i Islamic State is losing territory rapidly, but they do seem to disbursing their fighters to places like libya or sending them back to europe. We dont know anything about these three men. So there is progress. As they lose territory, theyll become less effective, but its going to be a very difficult transition period. It almost seems that they become more desperate as they become more confronted by conventional forces. Thank you all for joining us this morning. The london rampage is not stopping the United Kingdom and Ariana Grandes one love benefit concert that is moving forward as planned. Cnn phil black is there. Ariana grande just took the stage. Phil, it must be a remarkable sight and sound. Reporter an extraordinary atmosphere here in manchester as some of the biggest pop stars in the world and 50,000 people are in the space behind me singing and dancing and making a defiant gesture against the terror attacks. Well have more just after the break. Even a coupe soup. [woman] so beautiful. [man] beautiful just like you. [woman] oh, why thank you. [burke] and we covered it, november sixth, twothousandnine. Talk to farmers. We know a thing or two because weve seen a thing or two. We are farmers. Bumpadum, bumbumbumbum what would help is simply being able to recognize a fair price. Truecar has pricing data on every make and model, so all you have to do is search for the car you want, there it is. Now youre an expert in less than a minute. This is truecar. Theres nothing more than my vacation. Me so when i need to book a hotel room, i want someone that makes it easy to find what i want. Booking. Com gets it. They offer free cancellation if my plans change. Visit booking. Com. Booking. Yeah. That stood up to any amount of sunlight. No matter how bright. If a paint could protect your doors color against the strongest uv rays. Is it still paint . Aura grand entrance from Benjamin Moore ®. You all the time. Ories am i going to pass away like my mom did . And so you know this is something thats important. Losing my mom to Heart Disease and then being diagnosed myself. Its like a war were trying to fight against these diseases. Resilience is in my dna. I wont die like my mom. Its a big challenge, but the challenge alex marquar in these peoples lives. Ence that would be my dream. Welcome back. Im Clarissa Ward in london. Ariana grande just took to the stage at the con love concert in england. It is a concert for the victims of a suicide bombing in that city less than two weeks ago. 22 people were killed. The performers refused to be silenced by the latest act of terror here in the uk. Despite yesterdays attack in london, the show goes on right now with heightened security of course. Now were hoping to have joining us Cnn International correspondent phil block who is that. The crowds are just staggering. What is the mood of the crowd . Reporter staggering, they were loud. I thought they were loud and then Ariana Grande came on stage. Were going to pan the camera and show you a little of what we can see at the moment. Ariana grande is on stage right now. She just finished a huge rendition with the black eyed peas. If there was a roof it would have came off. It was extraordinary to see. This crowd is enjoying this so much. The atmosphere, it is warm, it is loud, they are singing, they are dancing. As i said, it is just an absolutely extraordinary event to witness, really. From the atmosphere, the mood here, you could not really think that this is a community, a city that was torn apart by terrorism just two weeks ago. Remember a good part of this crowd were actually at ariana gr grande a concert in the Manchester Arena two weeks ago just before that terror attack. Many of them ran for for as they heard the explosion that took place outside. Today this is a gesture that says were not going to be were not going to take any of that too seriously. Were not going to worry about that. These people, some 50,000, have been waiting outside for hours. Theyve come under very strict security. Theyve all been s