very good system to figure out what happens if the president gets ill, what happens if the president is incapacitated, what happens if the president is even more ill than that. we have a process if, god forbid, the president were to die. but short of that there isn't a good process, and maybe there needs to be a slightly more institutionalized process, but i do think it's going to be read, unfortunately, as an entirely partisan issue. >> you do have this special coming up that is looking at the u.s. from a global perspective, which is so important right now. i want to just take a look with a preview. ♪ >> the queen was holding a reception for nato leaders at buckingham palace. the mood grew edgy as everyone waited.