White house correspondent Chris Jansing on the north lawn. And chris, the white house said they are aware of other american hostaging being held in the region. What has come out of the white house today on this . Reporter we know of public reports of one more hostage and josh earnest said he doesnt want to go beyond that because there is a belief in the Intelligence Community that talking about it is not necessarily helpful to their safe return but there are been reports of other american hostages. The president learned about the death of Kayla Mueller over the weekend. He has spoken to the family a couple of times, including to offer his condolences after confirmation of her death. The white house put out a statement saying she represents what is best as america and expressed her freedoms of what we americans enjoy and what others around america strife for. And they said the United States will find and bring to justice the terrorists responsible for kaylas captivity and death and that leads us to the broader conversation about the uamf the authorization for the use of military force which they have been working on for and since the middle of january. Take a look at the guidelines. We dont know what the exact wording will be but we know they want to end this openended one after 9 11. So there has been talk about making it three years. No geographical suggestions and some suggest it should be limited to iraq and syria and others say the president and the military need to be able to go where isis goes. It would limit fighting to isis and future groups that evolves and leaves open the option of combat forces. This is where it is likely to get sticky when the negotiations go on and whether or not there will be bootsond on the ground and what would the wording be so specific as to say only in the case of americans who are caught in dangerous situations on the ground. So those are the kinds of details being worked out but there has been almost unprecedented outreach to the hill. There has been a lot of conversations with top congressional leaders about how this should be worded because both sides have suggested republicans and democrats that they know this will be a lot of debate, it could take a while to get through and start with some hearings on the senate side but could be a matter of weeks if not months before there is finally a vote and a decision on how to move forward with that. Chris jansing at the white house for us. Thank you, again. Lets bring in shane harris and from the brookings institution, kenneth pollack, a former persian Gulf Military analyst. Ken, ill start with you. You just came back from iraq and wrote a piece saying that isis is losing on the battlefield in iraq but where they have the most power is induceing fear and overreaction not on the battlefield but in videos and by killing our people. Is this what is going on here . This is part of it. And we need to recognize while there is a military piece to this campaign the military campaign is more important. And this is what i talked about in my piece. Look at the name. It uses terror for its purposes. It is trying to frighten other countries to deter them and it is trying to speak to the disenfranchised youth of the arab world, people angry and frustrated and looking to strike a blow against the powers that they think oppress them. For these people these actions by isis help in their recruiting. So they are trying to frighten up and reach out to people who they think will be receptive to their message. Shane, we got confirmation with Kayla Mueller was dead between of communication between the family and isis. What do you make of an American Family communicating directly from this group that we dont trust and do not negotiate with and we fully understand and respect their deep need to know what happened to their daughter their sister their friend. Could it make it harder for the state to do what it has to do when you have an American Family talking directly to them and spreading the information they may want to be spread . I think the lesson here is the family was in the position of having to negotiate and make the outreach on their own because frankly the government is not doing a lot to directly try and negotiate with isis. We have a very strict no ransom policy. The administration is coming under fire that they are not marshalling all of the resources of government to get the families out. So here you have the muellers in a desperate situation trying to keep any means of communication open that they might have with the people who took their daughter and responsible for her death. It is a tragic situation but the families find themselves having to try and reach out on their own. And ken, when we look at what is happening in jordan they are stepping up and taking a leadership role and both military, and we saw the queen to join the fight against isis how do you think this is changing the dynamic of the fight . I think it has been a very interesting development. And obviously we need to be careful. It is not clear how long this enthusiasm will last but trier to the killing of lieutenant al kaseasbeh was ambivalent in the fight against isis. They didnt like the fight and hate but they faced the shia in both iraq and syria and many of the sunnis were more afraid and concerned about the shia than about isis. I think the killing of the pilot has changed that view in the shortterm and focused most of the sunniarab world on isis is clearly bad guys we have to get rid of them and whatever else happens with the shia. Shane, tomorrow if the white house does release as expected their proposal for the war powers it will be a significant day in Foreign Policy history. The first time a president asking for war powers since the iraq war. What do you think the limits are that matter here . Because most of the congressional leaders, including the Republican Leaders on both sides of congress have said the more wide open the better . I think the limits that are most important are on the question of ground troops. Right now weve been fighting a war against al qaeda in its associated forces with no geographic constraints or restrictions. The air campaign is not intense against isis but it is persistent and going on for months. What most people will tell you is we are killing isis fighters at the rate they are replacing them and ultimately this campaign will change and hinge on the question of Ground Combat as the attention turns in spring to take back mosul in iraq from isis. So the key details are what re restrictions does Congress Place on the president. Thank you both as always. And the family of the american hostage Kayla Mueller will address the media at the top of the hour. And well bring it to you live right now. And right now the Jordanian Forces are heading live to the border. And we have on the ground in amman straight ahead. And coming up a cycle exclusive. An interview with the top prosecutor who knows a thing or two about trying terror. And domenica is here with the winter blast, that time of the year that we get sick of the weather that we have to give it a name cross polar flow. Can kind of makes me miss that polar vortex, guys. Go, go, go. Woah go right, go left, go left stop now go. shouting lets go i gotta go can i go . Yup you can go. beeping alert woah there you go way to go lets go buddy, lets go anncr the ford fusion. We go further, so you can. Americans drink 48 billion bottles of water every year. Thats enough plastic bottles to stretch around the earth 230 times. Each brita filter can replace 300 of those. Clean. Clear. Brita water. Nothing is better. I rise today to mourn the tragic death of 26yearold humanitarian aid worker Kayla Mueller of prescott arizona who had been held by isil terrorist in syria since august of 2013. We and i am heartbroken for the mueller family at the loss of their beautiful beloved kayla. The thoughts and prayers of the people of her home state of arizona, her country and the civilized world are with the mueller family at this terrible hour. Senator john mccain acting to the news that one of his constituents was killed after being held as a hostage. Well hear john kirby at the pentagon talking about isis. When the u. S. Government says that they have they had information there were no civil yaps at this location and go on to say, as josh earnest did, that this cast doubt on the claim of isil that Kayla Mueller died in an air strike my question to you is how confident are that that you know what was at that site . What we said jamie, is we see no indication and we have no indication that there were civilian casualties as a result of those strikes. Or collateral damage. So that is one. Two, weve also said this was a legitimate target a known weapons storage fashion that isil had been using. We had hit it before. At least twice before that i know of. Not uncommon for us to go back and hit it another target because sometimes they go back and use targets that have been hit in the false assumption once hit, it is safe and we can go back there and use it. Not uncommon for us to go back and hit a target multiple times. We do not know the circumstances surrounding her death. I said that to lena. But i can tell you we still see no evidence that casualties were the result. Rear admiral john kirby at the pentagon talking about Kayla Mueller. Jordan is upping the ante in the battle against isis. Keir simmons is following this from the capital of amman and joins us live now. What is the latest . Reporter well toure, the jordanians are joined by the united emirates and they have been helping with airstrikes through today so no letup in the pressure of air power on isis. A number of other developments that could get lost amid the very important and understandable reporting of what happened to kayla. One thing is that the iraqi deputy Prime Minister said he does not believe that iraqi forces are ready for a ground offensive because those troops that have been moved to the border here have raised peoples concern about whether there is a ground defensive against isis about to get underway. Well the iraqi Prime Minister suggesting that wouldnt be smart. Not, at least, he said for a month. And another Important Development is an interview that president assad did with the bbc overnight and in that interview, he suggests that there has been occasional, through third parties if you like contact between the allied forces and the Syrian Regime and that has the potential to do damage to the increasingly united front shown by powers in front in this region combined with the u. S. To fight against isis with this air power because president assad is seen as a negative force by many, many of the governments here, is seen as having killed many thousands of syrias citizens. And so people will be concerned, if there is some indication that there is communication between the Syrian Regime and the forces busy fighting isis. It is a really complex region and what happened to kayla is absolutely heartbreaking and incredibly difficult for an American Family seeing their daughter caught in kind of what is a threedimensional chess board of diplomacy and difficult tensions in the area. Indeed. Keir simmons in amman. Lets turn to jam borger from the Brookings Center with u. S. Relations. Welcome, sir. Media has been and up coming author of isis the state of terror. Media has been important to isis so im curious as to why you think that with the Kayla Mueller situation, they would skip the opportunity to create another video . Well we dont know the circumstances that Kayla Mueller died under but there are hazards for anybody in that region whether it is being hit by an air strike or death by disease or by accident or an attempt to escape. So what weve seen in the past is when isis can control the circumstances of hostages death, they do it and they use it to theatrical effect and since that didnt happen this time, i would speculate without firm knowledge, they lost control of the situation in some way. And so when you think about the head of isis albaghdadi, weve heard reports, unconfirmed, hes been injured. Can you tell us about him. Hes a shadowy figure and hes not seen often and what is his impact and how that impact will hurt them . He has been hurt before and that has been said before and i wouldnt put much stock in that until isis announces something. What we know about albaghdadi is he is educated in islamic law compared to other terrorists even though his organization doesnt reflect that. He was a prisoner at camp buka and we believe that he helped build the network that eventually became isis there, with other prisoners. Hes a powerful figure in terms of the symbol he presents but not a strong presence in terms of being very advisable. Weve only seen him once. Weve had a lot of audios but operates from the shadows. His loss may not completely upset the organization from that. Jim i want to read something you wrote for Foreign Policy magazine. Al qaeda has been urging attacks for years with little success but within short months isis has been highly successful at motivating support hes to act out and siex people in missouri are facing federal charges involving isis and accused of sending aid to militants in syria via social media. Why are lone wolves clinging to isis more than al qaeda . Well isis has a very different approach to how it reaches out to people than al qaeda did. Al qaeda for all of its violence and incredibly prehistoric views on how the world should be run, it sent out a pitch, a recruiting pitch aimed at convincing people who thoughtful people to join their organization. And what isis has done is inverted the narrative and they will take anyone and their propaganda is aimed at stimulating people who are inclined toward violence rather than trying to racially convince them to create violence. And i think you can see there are obvious utility in taking that approach. If what you want is just to see headlines and that is a lot of what isis wants. And what does your Research Tell Us about how isis uses social media . Well isis has an extremely organized social media presence. They have a fairly large group of supporters including a couple of thousand supports who are really much more active than other supporters and order neri twitter users. So certainly in the second half of 2014 we saw that deployed effectively. They were able to insert their messages into Research Results and win spots on thirdparty aggregators of twitter content to say their hash tags were trending. In the interim weve seen suspension of accounts by twitter. Jim berger thank you. 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If you thought the president and the western world for that matter had its hands full of isis lets remember another policy land mine rearing its ugly head iran. The president with Angela Merkel maintained that the u. S. And the allies are just about done negotiating when it comes to nukes. The issues are significantly clarified where we are at a point where they need to make a decision. The deadline for deal is march 31st and the president insists that is a firm date. But israeli Prime MinisterBenjamin Netanyahu is a fly in the ointment insisting on speaking before Congress Next month to present his case against a deal. The president is refusing to meet with bibiwhen he comes here next month. Alli is in the capital of tourn. Reporter well ayatollah said he would go along with any deal made. But other remarks tend to be geared toward powerful hardline loyalists and he said no agreement is benefit that runs contrary to the nations interest. They said they will not add anything contradictary to the countrys idea [ inaudible ]. He suggested they want the sanctions lifted swiftly rather than gradually. And this is a major Sticking Point in the negotiations. Along with the size and scope of irans enrichment capacity. Last week at the Munich Security Conference iran foreign minister said this is the best opportunity to seal the deal but if it didnt happen it is not the end of the world, indicating that iran has made a massive effort and if the deal fell through, it would be america that will get the blame. Tomorrow is the 36th anniversary of the islamic celebration and the president is due to give a speech which is sure to shed more light on irans position in the negotiations as they head toward a very very critical phase. Susan. Ali, thank you very much. Now joining us from the white house, we find jonathan allen, blockbergs Washington Bureau chief. Thank you for joining us. Good to be cycling. So we heard alli tell us there is a hard deadline and they are trying to position it as if negotiations dont prove fruitful it is the u. S. s fault. When we look at the politics of this a hard line in the sand here, it plays well politically but is this the right strategy for the president