stephen hadley joins me now from washington. welcome back to the program.ou've listened to everything david sanger has been saying and you've heard what president trump has said, and now you've heard what the north koreans have said about what happened behind closed doors. just give us your take on whether a big chance was missed here or whether walking away was the right thing. >> well, i think the conversation you had with david framed it up very well. i think it's too soon to say if the deal was yongbyon only, that is to say a partial shutdown of north korean facilities in exchange for total sanction relief which is the way the president framed it, then the president was right to walk away. there are a lot of people who were concerned he would give away the store. well, he clearly did not do that and was willing to walk if he didn't get a good deal. i think you're right. there is an opportunity here as you and david discussed. so the question is where do we go from here. one option might be an escalation of rhetoric, an escalation of programs, an escalat