In November 1943, the Nazis and their Axis allies controlled nearly the entire European continent, yet that same month, the "Big Three"—Franklin D. Roosevelt, Winston Churchill, and Joseph Stalin—secretly met for the first time to chart a strategy for defeating Adolf Hitler. Over three days in Tehran, Iran, this trio agreed upon the D-Day invasion and discussed what might come after the war. As Bret Baier asserts here, it was FDR's finest hour, yet the three men barely escaped a Nazi assassination plot, code-named Operation Long Jump.