Setback for the world. Dana this comes a few hours after the regime said it destroyed its Nuclear Test Site. Yet that is something experts believe was already unusable after a major earthquake last year. We have Fox News Team coverage. Greg palkot is in seoul. But we begin with chief White House Correspondent john roberts. Busy day over there, john. John unlike other days here, dana. Good afternoon to you. The president canceled the summit after the Deputy Foreign minister of north korea issued what white house officials said was tantamount of a threat of nuclear war if the talks didnt go well with the president. The white house believing that is not the most productive position that north korea could have taken ahead of planned summit so the president this morning sent a letter to kim jong un to say much as we would like to do it, its off. He did give him something to back into if he wanted to, come back to the table. He also insulted the Vice President mike pence calling him politically dumb saying that recent statements from the Vice President were stupid. But the white house says they hear that from north korea all the time. That is not the reason they canceled the summit. The Nuclear Threat is the reason the president was forced to pull the trigger. In the roosevelt room a short time ago, President Trump praised the north korean leader, threatened him with Nuclear Destruction and invited him to the table. Listen here. President trump i hope we will continue on. Well see. We are in a very strong position. I think they want to do whats right. I think they want to do. Its only recently this has taken place. I think i understand why its been taking place. But they want i really believe kim jong un wants to do what is right so hopefully things will work out. You heard what the president said, he says he thinks he knows what has taken place, to change the attitude. He was asked about it and he said im not going to say. He suggested that kim jong uns attitude changed after he met with xi jinping. He suggested that xi might have gotten in his ear and said im not sure you want to do the summit thing. That is when he thinks that north koreas attitude changed. They have also been radio silent about setting up the summit. And secretary of state mike pompeo on capitol hill earlier today and pushing back on the suggestion that the president cancel the summit because the white house wasnt ready for it. Listen here. Over the past many days, we have endeavored to what chairman kim and i agreed to put preparation teams together to begin to work to prepare for the summit. And we had received no response to our inquiries from them. So we in addition to what the president laid out in his letter, its also the case that the i disagree with what you said in the opening statement. I think the American Team is fully prepared. I think we are rocking. Were ready. Where it goes from him depends what kims reaction to the letter will be. Its 10 00 pyongyang time when the president transmitted it to him so we likely wont hear anything from north korea later today. Morning their time. If its the typical north korean kneejerk reaction, dana, a summit may never happen. If kim jong un considers what the president is really saying here is you are not getting good information from xi jinping. Its much more in your interest to side with the United States than to side with china. Maybe, just maybe well hear Something Different from him. Dana all right. Diplomacy is tricky and never necessarily a straight line. Thank you so much for that. You bet. Dana the announcement of the canceled summit came hours after north korea said it demolished the main nuclear site, something many believe was just for show because no International Regulators were there. Senior Foreign Affairs correspondent greg palkot is in seoul, south korea. Greg . Hey, dana. We will get to that event in a moment. But it is late here in seoul. We are now getting reaction from the south korean government to the events of the past couple of hours. South korean president moon jaein in special session with the National Security staff urging direct talks between President Trump and kim jong un saying, im quoting, denuclearization cannot be delayed or abandoned. The president here seemed to be a bit blind sided by events. He was quite perplexed by the statement coming from President Trump. He called it regrettable. President trump said he spoke by phone with south korean president moon including about the military readiness in the region. That has to be a bit of a blow to the south korean. He has been working for months to get a diplomatic resolution of the crisis including his own summit last month with kim jong un along the d. M. Z. Again, the white house summit cancellation seems to stem from statement from the regime. Especially to, quote unquote, libya model regarding north korea from our experience here. Pyongyang takes that to mean regime change and hates it. Also getting the white house angry, the threat to go nuclear to nuclear in a showdown between the countries. We understand also that President Trump spoke to japanese president abe a firm ally in the region. And yes, now on to the event to the northeast of where we are. Ironically this was supposed to be a day when the region moved closer to peace. North korea claiming thursday it completely dismantled the Nuclear Test Site in the Northeast Corner of the country. Foreign reporters were at the scene, they said there was an explosive closure of the tunnels there. There were no International Experts confirming what was said. This was largely seen as a p. R. Gesture in advance of that planned summit. Now that summit for the moment is not to be. Yes, it is late here, dana. We have not gotten any keep of reaction from any kind of reaction from north korea. They have been better reacting now than they have in the past and we might hear something on friday. Well see. Back to you. Dana well come right back to you, greg. Thank you. To help us break it down. Jamile jaffers, former adviser to the house intelligence committees. Glad to have you. It has been disorienting to have kim jong un be so cordial. He did release the american hostages and it looked like we were full steam ahead. What do you know about the china angle here . Also, is it somewhat, a little more comforting when you realize oh, this is the kim jong un family we know . We have respect for the process, for the summit but we are not going to go there and be snookered. That is right, dana. Look. China obviously is a big player in the region. They are ultimately the backer of the north korea regime. Without china there is nothing for north korea. They dont have any support. They are inclined to go where china tells them to go. Its interesting that the aggressive statement came after meeting with the china leader. Its not clear if he said i want to get more aggressive or china said you need to be more aggressive. Either way, what you are seeing here is two leaders sort of going toe to toe to say i can cancel, you can cancel, i can talk about nuclear war and so can you. At the end of the day, while the tensions heated up a little bit, president canceled the summit but i bet its back open in two weeks. Dana the president did leave the door open for that. Every actor here involved, china, japan, south korea, United States and certainly north korea are acting in their countrys best interest. Help me understand. Why is it in chinas interest for the summit not to go forward . Look, at the end of the day what is in chinas interest is to have a north korea that comes back in line and does right thing here. But also north korea that is strong relative to south korea. At the end of the day what they see, they use the cold war terms. The u. S. Has a fear of influence. South korea. China, north korea, so they need to balance it off. If it looks like trump has the upper hand china says we want you to back off. North korea feels the same way. So not clear if its china pulling the strings or north korea reacting to say we want to do this and china says yep, that sounds fine to us. Dana anything the president does comes with some criticism from some parts of the country. Richard haas from the Foreign Policy circles tweeted the summit was bound to failed as trump badly overestimated what north korea agree to. The issue is and was the u. S. Willing to accept outcome short of total denuclearization. All or nothing Foreign Policy with north korea, iran, china, trade risks producing nothing but or conflict. I wonder what you think of this. You were instrumental to guide republican side members of congress as president obama moved forward on the iran deal. What parallels do you see here . Look, you can always talk about half measures. If you want Foreign Policy of half measures, fine. Incrementals, that is fine. Donald trump going for a big prize here. That comes with some cost. Everyone was amazed that donald trump could pull off a big meeting like this. I think it still happens in the long run but on americas terms. That is the right way to negotiate. If it looks like we want it too much like the iran deal they will string you out and get a variety of concessions. That is what happened with obama and President Trump says it wont happen to me. Dana isnt the issue here what denuclearization means . Kim jong un is in a stronger position because he now has the weapons. We say no, you have to give up the weapons if you want the other things that the president said could be good for your country. The definition of denuclearization is the key here. You are right. That is the key. The challenge here is donald trump might have a different view of what denuclearization means. The u. S. Position has been no Nuclear Weapons on the korean peninsula, out completely. Kim jong un might agree with that. But he may mean ill denuclearize when you denuclearize. That is unsustainable scenario. We see what is met here but part of why you want to get to the place they are talking to one another and understand the terms before you go in negotiations. Dana one thing that is different is before the whole process, before mike pompeo the new secretary of state had gone over to north korea, actually met with him. We didnt have any sort of relationship. So that is different. And i think you are right. It will probably take place at some point but maybe not in two weeks. Jamil, thank you. Thanks, dana. Dana we are keeping an eye outside the second Justice Department meeting on the allegedfein infor alleged f. B. I. Informant targeting the trump campaign. What will come out of after the political back and forth on who is attending. Mitzi Psoriatic Arthritis tries to get in my way . Watch me. mike ive tried lots of things for my joint pain. Now . Watch me. joni think id give up showing these guys how its done . Please. Real people with active Psoriatic Arthritis are changing the way they fight it. Theyre moving forward with cosentyx. Its a different kind of targeted biologic. Its proven to help people find less joint pain and clearer skin. Dont use if you are allergic to cosentyx. Before starting cosentyx you should be checked for tuberculosis. An increased risk of infections and lowered ability to fight them may occur. Tell your doctor if you have an infection or symptoms of an infection. Or if you have received a vaccine, or plan to. If you have inflammatory bowel disease tell your doctor if symptoms develop or worsen. Serious allergic reactions may occur. Mitzi with less joint pain, watch me. For less joint pain and clearer skin, ask your rheumatologist about cosentyx. Dana fox news alert on the two highly anticipated meeting on russian investigation. Pulling back the curtain of the revelation about the f. B. I. Use of potential informant inside the trump campaign. The first with top intelligence officials ended an hour ago. Among those attendees were devin nunes and trey gowdy, democrat adam schiff and white house attorney emmet flood. The second meeting involving congressional leaders and the socalled gang of eight. Bob driscoll is former attorney general and now managing partner of the d. C. Office. We are glad to have you here. Thank you. Dana this has felt a little dramatic, the back and forth about the documents and who will get to see them and the briefing. As i understand it, and sort of remember, this is kind of a classic struggle between the branches, the executive branch and the congress. Right. This kind of negotiation goes on all the time. Usually at the staff level. I Mean Congress has the right to do oversight, congressional oversight leads to transparency in the executive branch functioning, which is all fun. Similarly, the executive branch runs its own investigation and cant have secret sources or methods they use or other information that is justifiably confidential exposed through the congressional oversight. Its the kind of information where do you draw that line . We all know that we can all think of extreme examples. If you get down to looking at a particular document its categorizing that document where its okay to be turned over or not. Its not resolved in court. Its resolved in this type of negotiation. Dana for the gang of eight, that was the request yesterday from pelosi and schumer saying look, the democrats, there is a process for this. The gang of eight exists. That was added yesterday. I want to ask you about the intel community, the former intel community. And what they said about the importance of this process. They said in a letter when overnight activity oversight activity is bipartisan it can serve on check and any effort to exclude one party or the other threatens to undermine the oversight function and sends the wrong signal about the professional nonpolitical manner that must govern intelligence activities. How important is that . Its important for the perception standpoint. I dont think its important legally at all. Perception wise it does help. Frankly, with this whole investigation, i mean that horse is so far out of the barn in terms of having a perception that this is nonpartisan that im not sure there is much we can do about it now. But i think that it probably helps if both sides are there. Things arent mischaracterized and there is not a fight over who said what. This is probably some benefit to have both sides there. Dana these are classified briefings so by law, nothing should leak out of them. We will see if that happens. Trump, by the way, the president could declassify anything he wanted. That is the thing about being the head of the executive branch that makes this unusual. Dana do you think he is being deferential to the Justice Department and saying look, i know you have to do your thing so ill give you room here to run the process as you see fit . Well, i think he is having it both ways. Fairly deftly, frankly, through the use of twitter, he is hammering the department. To keep in the good graces of the Freedom Caucus types but at the end of the day the fact he hasnt declassified it or demanded it to be released, and he could they are subordinates to him and he is holding their feet to the fire and make sure they are not overly broad to hold it back. Dana another story, now to the mueller investigation. So the backandforth to whether or not the president should do an interview. Rudy giuliani had said he does not want his client, the president , to do an interview but now he is saying he is open to considering the idea of a trumpmueller interview and says basically his client wants to do it and he wants to make his client happy. Where do you think this stands . Im glad he is open to it. He has to be open to it. The president is his client. If you are the lawyer at the end of the day, its the clients call. I agree with the vast majority of lawyers that i would never recommend that the president do a voluntary interview from a strictly legal perspective. But the president has broader political concerns as well. He may disagree with that. For his intention for overstatement or hyperbole, when these questions require specific answers it wouldnt be a Great Dynamic for him. Dana do you think the president thinks if he does the interview because he maintained his innocence, if he does the interview it will end . I think certainly giuliani has said that publicly. I think that may be driving the president s thinking is hey, if i can sit down for four hours, i didnt do anything so really what bad could come out of this . Because there is nothing for me to lie about. Ill just do it, get it behind me and be done by september as giuliani promised. But the president has been promised this sending before by ty cobb by thanksgiving, christmas and then january. Dana i know. So, that may be driving what he thinks. Which the lawyers may not agree with but at the end of the day we all have clients when you practice law. He is the ultimate client that knows he is in charge. Dana all right. Bob driscoll, thank you for being here. Thank you, dana. Dana so the Trump Administration working to bring down the cost of Prescription Drugs. F. D. A. Commissioner Scott Gottlieb joins me to explain how they are doing it despite opposition from major pharmaceutical companies. You said youre not like me, never drop to your knees, look into the sky for a momentary high, you never even tried till its time to say goodbye, bye everybody fights for a little bit of light, i believe. Geico motorcycle, great rates for great rides. Im trying to manage my a1c, then i learn type 2 diabetes puts me at greater risk for heart attack or stroke. Can one medicine help treat both blood sugar and cardiovascular risk . I asked my doctor. She told me about noninsulin victoza®. 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