events for ham my karzai. a somber visit to arlington national cemetery. then a meeting with the secretary of state hillary clinton over at the u.s. institute of peace, mr. karzai is just one of several leaders the obama is administration is engaging in right now in some very high level negotiations. let's talk about this and more with our senior political analyst, david gergen. i heard one person say, an influential person and i want you to react to this, david, that in recent weeks, the president, president obama has gone eyeball to eyeball with hamid karzai, there's been some tension there, with the prime minister of israel, benjamin netanya netanyahu, in recent months, with ahmadinejad of iran, there was a threat that they had until the end of last year to come clean on their nuclear program, they didn't and still nothing much as happened. and the notion is obama is blinking and these guys are not