World War II was over and America and the world now looked to an era of peace. But new problems were on the horizon. The victorious allies were now forging a new world order, but couldn’t agree on what that order should look like. The world had suffered through two world wars and desperately feared a third one, especially now that the atomic genie was out of the bottle. How President Truman handled these challenges is the subject of this episode of This American President.