to what josh was talking about, how do you define what success is. there are four ds everybody is looking for. denuclearization, demobilization on the north korean side. north korea wants from americans de-escalation and some talk about development, economic development and money coming in. i think the agreement on definition about who is talking about what when is going to be how success is defined at the summit. gayle, josh okay, dave, quickly. the president is in an interesting place. he s unpopular broadly at home but his north korean approach is very popular and gives him room to define what success is in the short-term. it will be very interesting to see what he does with that. north korea very important for him diplomatically, internationally, but also domestically as well. david, gayle, jim, josh, thanks so much. fred, back to you.