. >> isn't it true it's hard to get in the mind of a foreign mind, it's our job to resolve uncertainies in a way of fear? when we couldn't know for sure how many missiles they had, we exaggerated because there was always somebody here would say are you certain? and nobody in our society wanted to be wrong. nobody wanted a second pearl harbor, nobody wanted to under estimate the threat and we couldn't be sure of what the threat was and sadly, khrushchev, for all the intentions we now know very well because of the materials that the russians finally opened, he often spoke as if his society was producing more missiles than they were. he was feeding some of of our paranoia and doing it deliberately because he was afraid of us. it was a vicious circle. >> one thing you can know and feel good about in the new treaty where we are today and in 2011, 1500, down to 1500 missiles each. so we're making a lot of progress and i think the american exhibition was a part of that. you and tanya you look at the picture there of the guides, it was a fantastic thing. 52 years later i still remember things a