This morning, a usually bustling ropean capital, paralyzed. The u. S. Embassy ordering americans here to shelter inn place. A parisstyle attack is what theyre expecting, the threat deemed serious and imminent. But on the second day of the high alert, tourists were millining around. Armored vehicle. Its not normal. Reporter local police were offering assurances. We need to have support from the army, so everything i is secure here in brussels. Reporter in neighboring france, officials are still looking for clues after the suspected planner of the paris attacks, Abdelhamid Abaaoud was and the eighth paris terrorist, salah, Authorities Say he drove to belgium. The lawyer for his companions telling abc news, he looked angrgry a was possibly wearing a suicide belt. Meanwhile, the survivors in paris still haunted, the lead singer of the American Band performing at the bataclan talked to vice news. A great reason why so many were killed because so many people wouldnt leave their friends. Reporter the spector of the jihadist threat is also rising in mali where al qaeda is claiming credit for thahat deadly hotel siege. An american survivor telling his story to alex marquardt. They never looked, they were shooting, the slls were hitting me. They never looked. Reporter from africa, to europe, to the front line in the front against isis, this week we were in iraq, where isis holds huge swaths of territory, but the kurds have had some success in pushing isis back. With help from amecan advisers, but the threat is still enormous. The kurdish fighters have taken up positions all around kirkuk, isis. In asia, president obama insisting that destroying isis is a realistic goal. The real too we he to fight isis, is to say that were not afraid. So, martha, you have spent this week on both fronts, which is at least a twofront war. Reporter it really is, george, when you go into iraq and you can see the continuing air strikes and we were in the command center where theyre conducting those air strikes under pretty strict rules of engagement. Tranansition wasnt that difficult, becau you have soldiers all over the street, you have armored personnel carriers as we saw. Also here, were in a small square, just across from me is the home of where the missing terrorist used to liveend here, i talked to some people on the streets today, including a 15yearold girl, i asked her what its like to live in this neighborhood, he said yes, we d have somome terrorists in the neighborhood but were all not all terrorists, were frightened ourselves of whats happening. Well turn now to the political fallout from these terrorist attacks. Hillary clinton holds a commanding lead on the democratic side but Bernie Sanders has gained nine points since joe biden said hes not over ben c ceson. Followed by cruz and jeb bush. Donald trump joins us live after this report from jon karl. Reporter the president was half a world away in asia, but it seemed like he was on the campaign trail, repeatedly slamming republican who want to keep Syrian Refugees ss out of america. Back in washington, his own party was defying him. Nearly four dozen House Democrats joining republicans voting to stop Syrian Refugees until the government can certify they posee no threat. Governors have vowed to keep Syrian Refugees out of their states. The president said the refugees are thoroughly vetted. With two of the paris terrorists now suspected of sneaking into france as refugees, one using this doctored passport, Security Fears have saturday. Our new poll shows a majority now opposed to taking in jeff gees. The threat says terrorism is second to onomy. 54 disapprove of the president s handling of terrorism altogether. On the campaign trail, ben carson came under fire. If theres a rabid dog running around your neighborhood, you probably not going t to assume something good about that dog and youre probably going to put your children out of the way. It doesnt mean you hate all dogs. Reporter donald trump spoke a fur your when reporter asked him if he would support a database to track muslims in the United States . There should be a lot of systems beyond databases. S. And today you can it. How do you get them to register. Just good management. Reporter trump said the database he wants is skrus for syrian refuge. I want database for those people coming in, i want surveillance if we have to, i want surveillance of certain mosques, okay. Jon karl joins us now. More results of that poll, which has been remarkedly steady. Through major controversies and national debates. Look at the numbers since september, marco rubio has gone up ever so slightly, bush down. But for dond trump and ben carson, the n numbers are virtually unchanged and consider this, it was our poll in july that first put donald trump as the frontrunner and no matter what he has said, he has not budged from the frontrunner since then. Y shed that tough numbers for president obama on starting to transforthis race. If you look at those numbers, george, the lowest approval for the handling of terrorism for present obama. On the republican side, look who the republicans trust to handle terrorism,m,onald trump. Lets bring in mr. Trump right now. He joinss on the phone. You just heard those numbers, mr. Trump. Is the nomination n yours to lose . I dont know. I dont think about that. Ihink about february 1st, ia and then we have new hampshire. I think im leading in every state. But were doing really well. I was happy to hear your numbers. People are tired, theyre sick and tired of incompetence and stupid people leading them. Whether its trade or dealing with isis. Everything is wrong. I was after the oil. I said attack the oil, i have been telling you that for two years, attack the oil. Isis became wealthy with the oil. Now theyre starting to attack the oil. You stirred up those comments with the database, are you ruling out a database on all muslims . No, not at all. I want a database for the refugees that if they come into the country, we have no idea who these people are, when the Syrian Refugees start pouring into this country, we dont know if its isis, i definitely want a database and other checks and balances. We have no idea whos being sent in here. It could be the great trojan horse of all time. When they come in. When i look at the migration and the lines and i see all strong, theyre men, very few women and children, theres something strange going on. In europe, lot of bad things are happening in europe. Just ask the folks that live in germany. But statistics do show george, weant to be individual lant. We have to be vigilant and we have to call radical islamic terror. We have a president that wont issue the term. When the syrians come in, if theyre going to come in, we have to be very, very vigilant and a database would be fine for them and a watch list is fine. We have to watch and see. Just for the record, though, the statistics do show majority of the refugees are women and children. You also told yahoo news, we have to do things that are unthinkable a year ago. Back enhanced interrogation like waterboarding . We have to be strong. They dont use waterboarding. They used chopping. We have i would bring it ck, yes, i would bring it back. I think warboarding is peanuts to what theyre doing us. What they did to james foley, thats a whole different level. I would absolutely bring back interrogation and strong interrogation. You said we have to consider closing mosques. Jeb bush called that a sign of weakness. Jeb bush is a weak person, that has been defined vy strongly. Jeb bush is a weak person. I call him a loenergy person. Jeb is a person that will not a solve problem you have very, very tough people that youre dealing with, they only understand strength, they dont undederstand weakness. Somebody like jeb and others that are running against me and by the way, Hillary Clinton i i another one, hillary is a person who doesnt have the strength or the stamina in my opinion toe president. She doesnt have strengthr stamina, shes not a Strong Enough person to be president. Were dealing with vevery, veryy strong people and y need strength and you need stamina. Hillary doe not have that. What would be your criteria to closing mosque. Aree wt are your criteria . I dont want to close mosques. I want to surveil mosques. All mosques . Well, i do there are certain hot spots, let me tell you, the people arent involved inhose mosques, they know who the bad ones are and the good ones, but they dont talk and we have to surveil the mosques. We were doing it until de blasio closed them up in new york city. We have to surveil the mosques. We were learning a lot andnd they were stopping problems and potential problems by learning what was happening. Hey, look, i dt want to close up mosques but things have toppen where you have to do you want to keep terror watch list. Under current law, individuals under the watch list have been allowed to guns and explosives, are you okay with that . We have to have a wat list and if that watch lis has somebody, you know, we have the on the book,econd amendment of guns. Im a big proponent of the Second Amendment. If in paris some of those people, if you had some of those people had guns you wouldnt have had the horror show that you had people are on a watch list, people are sick, you have already this is already covered in the legislation that we already have, george under c current law, people on th watch list are allowed to buy guns. Listen, george, if we have an enemy of state, i dont want to give him anything, i want to have him in jail. If those people in paris had guns in that room it would have been a shootout and very few people would have beenurt by comparison to the people were hurt. Yes or no, should someone on the terror watch list be allowed to buy a gun . And anymymy of state, i would keep him away, absolutely. You raised some eyebrows with commts you made at your latest rally in relation to 9 11. Hey, i watched when the World Trade Center came tumbling down and i watched in jersey city, new jersey, where thousands and thousands of people were cheering as thatt building was coming downwn,housands of people were cheering. You know, the police say that didnt happen at all. Those rumors have been on the internet some time. I saw it. You saw it with your own eyes . There were people who were cheering on the other side of jersey, where you have large arab population, they were cheering when the World Trade Center came down. There were people cheering as those buildings kim down. It was well covered at the time, george. I know they dont like to talk about it. There were people over in new jeey watching it. Shef heavy arab population. The police say they didnt happen. A superpac supporting john kasich launched this attack ad against you. Benghazi, beheadings, paris. Our lives depend on a commander in chief with experience who understands the world. Implication that you dont,t, what is your response to that ad . John kasich is going nowhe, he was at the head of leeman, one of the top people atleeman, hes going nowhere. Anybody who does an ad against me w will be hit ten times. Look, they want to do it bause im leading. You just came out with the poll that says im leading. Because people are sick and tired of stupid and incompetent leading our nation. We have incompetent, when president obama stands up and says isis is contained and few hours later you have one of the most horrible attacks, and you have 300 people laying in the hospital, many of them dying, we have no idea, he wants to take in people who have no documentation, no paperwork, no anything, fm syria on the migration, people are going to come pouring in, the number he wants is much higher than 10,000. I heard its 200,000. We have a president that doesnt know what hes doing. We have a president , george, whos totally incompetent. That number is our refugees, that superpac is not alone. Frontpage story in the wall street journal talks about gop opatives promising to launch a gur ril la campaign against trump. Theyre going to have the first attempt to unite donors from rival camps into a single force. If that happens, are youoing to reconsider . Well see what happens. It wilill be vy interesting. But im leading every poll a lot. I resonate with the people. I had 10,000 people yesterday, every place i go, crowds smaller than 10,000 its like a small crowd for me. Nobody else can get 200. Kasich u if he speaks, if he gets 20 people in a room its a lot of room. I get crowds of 6,000, 10,000, 20,000, i had a 35,000crowd in alabama. Well, im going to have to see what happens. I have to be treated fairly. I have to be treated fairly. If im treated fairly im fine. I want a level playing field. I think people are surprised that, you know, their politicians and they have been doing this stuff all their lives. I haveeen a job producer, i have done fabulous developments all over the world. I have made a lot of money. Thats the kind of thinking we need in washinon. Thats why people are resonating with me. They know theres a great level of coetence. We have a great level of incompetence in washington. Frankly, a lot of incompetent politians running for office. How can an outsider be doing so well within the party. When i was a contributor, i know more about contributions than anybody. I contributed at the top of the line. All of a sudden, i im somebody theyre a little bit, i guess, they cant understand whats happening. Whats happening is very simple. People want competence now. Mr. Trump, thanks for your time this morning. Thank you very much. Up next, ourben carson. Plus in depth analylysisrom Martha Raddatz on how isis has become americas number one enemy. Announcer this week with orge stephanopoulos brought to you by pacific life. For lifeinsurance, annuities and investments, choose pacific life. The power to help you succeed. Our parents worked hard so that we could enjoy lifes simple pleasures. Now its our turn. Im doing the same for my family. Retirement and Life Insurance solutions from pacific life can help you protect whatat you lovand grow your future with confidence. Pacific life. 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Dr. Carson, thank you for joining u us ts morning. Glad youre with us right now. I want to get your response on some of the things we talked about with donald trump about how to respond to isis. Number one, he said we should ring back those enhanced interrogation techniques which president obama discontinued like waterboarding, do you agree . I agree that theres no such thing as Political Correctness when youre fighting an enemy who wants to destroy you and im not one whos real big on telling the enemy on what were going to do. But you would do that even though many consider waterboarding torture . Like i said, im not real big you have said we should monitor any churches or mosques ere theres a lot of radicalizations or things that are antiamerica, how would you determine that . Well, i said in a large capacity, we should monitor anything, mosques, church, school, you know, shopping center, where theres a lot of radicalization going on. But how would you know that . Intelligence, we have intelligence on the ground already, we do need to enhance that. For instance, we learned last week that the fbi seems to be able to monitor 30 to 60 people at a time. We know theres a lot more than that that need to be monitotored. Remember what happened with the monitoring at the airports, so much of the stuff was able to get through, we have to really improve that very significantly. Were talking abo the safety of the american people. So, you want to enhance the inlligence, how about this issue of the terror watch list as i told mr. Trump, under the current law, people on the terror watch lisist are permitted to buy guns, have been permitted to buy guns and explosives, would you continue that . As you sure know, there are a lot of people on that watch list and they have no idea o why theyre on that list, they have been trying to get their names off of it and no one will give them information. You know, im a big supporter of the Second Amendment and i dont want to deprive people unnecessarily of that. There needs to be better due process. Thats one thing im interested in, finding a way to make government more responsive to the people, its really unfair that people cant get a real hearing and they get put on a st and nobody can tell why they have to be tormented. And on the broader strategy against isis, i spoke wh president obama last week and had him to respond to your comments that you made at the debate, it would be fairly easy to take out the oil fields near anbar. What ihink he doesnt kno much about it. Look, george, i think its fair to say, over the last several years, i have had access to all of the bestilitary