So Truman, who was the President of the United States, instituted the Berlin Airlift. And basically what he did was if I was a starving Berliner, all I had to do was look every day and... Chips, apples, electricity. They dropped tons of food and supplies in order to kind of challenge the Soviets, what are you going to do now? And eventually what they had to do was build the Berlin Wall, which separated West Berlin from East Berlin. And really become symbolic of what the Cold War is all about. Other events, I mean we have the Korean War, a lot of this is the United States, so I want to be light on it. Because this is a world history course.