truman is going to meet with stalin and churchill in potsdam, germany, after hitler is defeated. i mean, it's a new big three now with harry truman being the president now instead of roosevelt. truman's attitude is going to be very different from that of roosevelt. and some indication of that change of u.s. policy comes right away. remember i mentioned to you that even vice president harry truman had not been kept informed of the manhattan project. one of them is, there's a few things you need to know. we've been working on a bomb. it's the biggest, baddest bomb around. here in potsdam, truman gets the word that it works. we have successfully detonated an atomic bomb. it works. and so he goes over to stalin and says to him, yeah, hitler's been defeated. we want to cooperate with you, but i need to let you in on a little secret. the secret is, we're going to end this war with japan because we have an atomic weapon, the likes of which, again, the world has never seen. that was supposed to be news to stalin. it wasn't. he already knew. really ironic, our own vice president harry trum