In paris. Lets jump right into this. Our Senior International correspondent Jim Bittermann is joining us Peter Bergman is here with me in washington. What are they saying about the arrests of these four individuals today . Reporter well probably the most surprising is the policeman arrested because he worked at one of the top Police Intelligence center to the east of pash ris. She is thought to be dush none of this is confirmed. Unofficially shes thought to be a girlfriend of an acquaintance of coulibaly. Theyve discovered that he was talking to this boyfriend of hers and that she had been talking to the boyfriend. She admitted some weeks ago that she knew in fact the boyfriend and knew coulibaly. But she said there was nothing untoward about it. And and pay parentally the police think differently. She hasnt been charged with anything. The prosecutor has six days for questioning before he has to release her or charge her. What about the other three . Who are they . Reporter well one is her boyfriend. He was already in jail on a drug charge. So he was just brought out of jail and brought over today to be questioned by police there. And then the two others we dont know. The prosecutor has not told us anything about them. This is the second group of four however, that have been picked up. There was another group of four that was picked up towards the end of last month and they have all been charged with various bits of logistical support, either supplying with weapons or cars or something else. Coulibaly of course was killed in the aftermath of what he did in paris at that kosher supermarket. Peter bergman what do you think of this . Its mysterious now, a policewoman has been taken into custody for questioning. Its strange but its not the first time. She might be somebody who has the wrong side of acquaintances. They havent charged her with anything yet. Theyre questioning her. Once they charge her well know if shes done something untoward. There have been a lot of people taken into custody since the january attacks by coulibaly on that kosher supermarket. As far as i can tell we are aware were pretty much where we are at the end of january. They trained at least one of the brothers. Charlie hebdo. And coulibaly self identified with isis. I dont think theres evidence that he actually went to syria thats emerged. So its isis inspired with a little bit of al qaeda. Let me let jim betterman weigh in. Is that the latest information youre getting there in paris, jim . Reporter basically yes. I think that the police feel like theyve got a good idea of the events themselves. I think what theyre looking for now is if theres anybody out there still who may spr been linked to coulibaly who might be contemplating purpose traiting something else. Thats really what theyre doing here. Kind of going back stream on all of the contacts that he had, checking out all of his friends to see exactly who else might be involved and who else might still be out there contemplating something against the law. All right. Jim bittermann i know hell stay in close touch with you. Peter bergen dont leave. I want to get to the war against isis. A top u. S. Military official arrives in baghdad as iraqi forces make significant strides on the batter field. General Martin Dempsey is now in iraq meeting with government officials and leaders. Hes there to get an update on the situation in iraq and the fight against isis. Meanwhile, Iraqi Security forces and malitiailitias are said to be a mile from the president palaces in takrit. Theyre ba ling to recontrol of that city. Ben wedeman is back from that area. Hes in baghdad now. Whats the latest youre seeing and hearing on this effort to retake saddam husseins birthplace takrit . Reporter what we saw is the iraqi forces are definitely moving forward. They had taken 80 kilometers 50 miles of road to the east of takrit. We saw that there was still a car smouldering that the iraqi air fire hit. And we watched as they pummeled the area around takrit and then sent their forces in. It definitely seems that isis is pulling back as fast as their cars can take them, probably concentrating their forces in takrit itself. Whale we were there we saw that isis has lit a lot of oil fires around the city in the hopes to obscure the view for iraqi helicopters and jet fighters in that area. But it doesnt seem to be slowing them down dramatically. What we also saw while we were there, i had an opportunity to speak with men who appeared to be iranian advisers with this parra military shia organization that really seems to be leading the fight. I spoke to one, he said she was a doctor a volunteer from iran. Several of the others declined to go into the details of what exactly they were doing. But iranian advisers are definitely on the scene. And we speak to the leader who told me that at this point they believe after their success so far that they can drive isis out of the entire country without, in his words, the help of the international coalition. In fact another of the leaders, commanders out there told me that four iranian advisers on the front are better than 400 american advisers in the green zone. Even if isis is defeated from the u. S. Perspective, iran and its shiite backed malitia allies could emerge as one of the big winners in iraq. One of the reasons that general Martin Dempsey is there. What do we know about this visit. Hes meeting with top Iraqi Military and political leaders. Reporter well we understand the americans are really looking ahead, looking beyond whats going on today around takrit which they accept in a sense as operation that the iranians are going to claim some credit for. Sort of their goal is to focus Iraqi Military minds and forces on the effort to retake mosul, which of course is way down the line at point because the entire area around moz sl controlled by isis. Its a long term planning effort. And of course the problem is given the sort of the sentiment on the ground the feeling among many iraqis at this point is that we can do it ourselves out without the help of the americans or anyone else. Maybe general dempsey is here to remind them that its a bigger task that taking takrit to isis out of mosul. Mosul is a city of nearly 2 million people. Takrit a lot smaller than that. Although symbolically it is important. Meanwhile isis is expanding its reach to other terror groups. Be boko haram is the Islamist Group base fd nigeria that has created atrocity. Our Senior Correspondent is joining us now. Boko harams pledge of loyalty to isis, is that considered to be legitimate . What does it mean . Youre just back from the region there in chad. Youre watching whats going on in nigeria. Reporter thats right. We did just come back from a recent trip to chad where we went with the chadian military to one of their front lines in nigeria to get a glimpse of what the battle looked like. During that trip we had the opportunity to speak with u. S. Special forces commanders who are expressing their concern about an official alliance between boko haram and isis. At this stanl its just an audio tape thats been released. We cant confirm its authenticity authenticity. What this means for boko haram at this stage, its the organizations attempt to gain more credibility. The coalition that makes up the lake chad basin, those nations have been making albeit slow but they have been making progress in some parts of North Eastern nigeria. Although the organization does still maintain very much a capability to carry out horrific and massive attacks as we saw in a marketplace over recent days. But when it comes to isis this is a clear understood occasion if in fact authentic, that its reach extend even further, wolf. Arwa, if you can still hear me i want a quick update on whats going on the isis assaults on the historic culture sites. Reuters reporting that thigh eve destroyed another ancient site in iraq. What do we know about this . Reporter that is reported to have taken place over the weekend or in the last few days wolf. Both of those things ie nounsed by the iraqi government. We have not seen images of it yet but reportedly isis bulldozing the ancient historic sites. We saw images by isis of its fighters taking sledgehammers to the art facts. Theyre calling this a cultural cleansing that isis is undertaking. The organization is terrifying populations and seemingly doing whatever it can to eradicate rich cultural history whenever it has the opportunity the do that. These are sick, sick people indeed destroying these historic historic artifacts. How with isis affiliation with boko haram affect the terror region around the world and the United States. And the email controversy surrounding Hillary Clinton. Even her demeanor allies are urging her to speak out and he are now hearing that shes planning to speak out on that controversy. Brianna keilar standing by with new information. Youre driving along, having a perfectly nice day, when out of nowhere a pickup truck slams into your brand new car. One second it wasnt there and the next second. Boom youve had your first accident. Now you have to make your first claim. So you talk to your Insurance Company and. Boom youre blindsided for a second time. 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Theyre not doing so well. This is way to say were with the biggest baddest terrorist group in the world. So its worryisome. 18 others say hey, we support isis. Its not alone. Whats the difference kb colonel reese, if they pledge their allegiance to isis or they pledge their allegiance to al kwie ka the arabian peninsula, 0 the former group of bin laden . Well wolf you know i was here back in december of this year before this trip. And you know isis was all over the place. They had come across and you know as well as everyone back there. It was the talk of the town. Things are changed here in the last couple of months very quickly back to the iraqis. So from my perspective with boko haram, im not sure why theyre doing this and it doesnt show a sign of strength from any perspective. It shows a sign of struggle. But i also saw today that i think isis is starting to show some fracture lines here. This might be an opportunity for them to kind of group up together to show more strength. But right now theres some struggles in both of these lines throughout iraq and nigeria. I dont know if you saw the story in todays Washington Post that suggests the reporter they have in iraq that isis is starting to fray from within. Those were the words she wrote, fray from within because of defections dissension within isis. Are you sensing any of that now . I am. I started coming here to iraq in 2003 with the u. S. Forces. When i retired in 07, started a company over here and u get a chance to come even here and see my employees. Thing are gone up and count throughout the years. What im seeing right now up in takrit, i was impressed with the iraqis. We saw some of the dead isis bodies by the side of the world and now the blitzkrieg that the iraqi forces are doing along with the iranian kurds force advisers there. Weve also heard from the iraqis from signals intercepted that theyre getting is that isis have told their people to shave their beards cut their hair, try to blend in and get the iraqi part out of there. And really the only ones that can stay because they really have nowhere to go are the foreign fighters who stay to conduct sniper operations. It does not look good for them now. Stand by. Meanwhile, a very different story were following here in the United States. Pressure mounting on Hillary Clinton, the former secretary of state. Hes getting ready to break her silence on the uproar of her private email account while serving as secretary of state. Were also learning new information about wh when she might be doing this. Stay with us. Whats that thing . I moved our old Security System out here to see if it could monitor the front yard. Why dont you switch to xfinity home . I get live video monitoring and 24 7 professional monitoring that i can arm and disarm from anywhere. Hear ye the awkward teenage one has arrived dont be old fashioned. Xfinity customers add xfinity home for 29. 95 a month for 12 months. Plus for a limited time, get a Free Security camera call 1800 xfinity or visit comcast. Com xfinityhome. I think that she needs to step up and come out and state exactly what the situation is. I think at this point, from this point on the silence is going to hurt her. All right. That was not a conservative republic. That was senator Dianne Feinstein of california the top demeanor on the Senate Intelligence committee publicly urging Hillary Clinton to address the growing controversy surrounding her emails while he serve as secretary of state. Earlier today, secretary clinton, her daughter chelsea and Melinda Gates. All eyes were focused on Hillary Clinton but she did not speak out on the email. Brianna keilar was there watching what was going on. Were now being told, youre learning that the former secretary is planning to address this email controversy as early as this week, is that right . Thats what were learning. Weve heard from sources who are familiar with her plans and familiar with the thinking of her team that they have come to realize that its untenable for her not to address this. The controversy continues. It continued enforce over the weekend. Its still very much the talk. She was on stage three times so far. I believe this event is still going on. She was on stage three times, once for an introduction once to talk about girls being involved in engineering and matt and another time to talk about climate change. No mention of the emails so far today. Were told by a source that her team considered this as a possible event for her to address this issue that is very much dogging her at this point. The issue of using just a personal email account while she was at the state department and also having a server that houses those email. However they decided against it. Part of the reason as you see Melinda Gates there on the stage with hillary and chill sea clinton. This was a joint event and they thought maybe this wasnt the best place to do it that it would subtract from the message. Shes got some other events this week that would probably not be appropriate for this kind of discussion either. She could easily call a news conference, or do a one on one interview. I would will happy to interview her here on cnn. Those are easy things to organize right . Thats right. There is an event tomorrow. Its a un event and that also seems like perhaps an ode place for her to address this. She had a chance on sad at a Clinton Global Initiative event. She didnt address it. I think right now the point where her team is at is theyre trying to figure out the mechanism. You mentioned a couple of them there. Is she going to do an interview. Is she going to have a press conference . Certainly there are a lot of reporters, especially here in new york this was a pretty big press pen at this event where she didnt say anything about the emails. So were waiting to figure out exactly when and exactly how she addresses this. Thank you very much. 47 republican senators meanwhile have written an open letter to the leaders of iran warning them about any nuclear deal they may sign with president obama. Were talking to one of those republican senators who signed that letter. Thats coming up next. Brushing alone does less than half the job leaving behind millions of germs. Complete the job with listerine®. Kill up to 99 percent of germs. And prevent plaque, early gum disease and bad breath. Complete the job with listerine®. Power to your mouth™. Also try listerine® floss. Its advanced Technology Removes more plaque. 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