>> jack, thank you. >> my pleasure. some sobering facts about nuclear weapons right now. at least seven countries officially, publicly possess nuclear weapons. two others, israel and north korea, are so-called unconfirmed. they don't publicly acknowledge that. according to the federation of american scientists, the vast majority of them, more than 80% are in the united states and russia. the most common nuclear weapon in the united states is five times more powerful than the atomic bomb that destroyed hiroshima. the u.s. also has warheads up to 25 times more powerful than the atomic bomb. the u.s. and russia have enough nuclear weapons to destroy each other as functioning civilizations. some sobering facts. two of those nuclear powers, india and pakistan, are uneasy neighbors, and have gone to war in the past, making any future tensions all the more frightening. and joining us now in washington, the prime minister of pakistan, raza gilani.