Watch Yalta's Last Secret: Betrayal, Bravery, & Resistance at the End of WWII

At the end of World War II, the Allies handed over two million Russian, Ukrainian and Baltic nationals to the Soviets. The agreement between Churchill, Roosevelt and Stalin was not disclosed until the "repatriated" were shipped to labor camps in Siberia during the great Stalinist purges. How does history judge these leaders, and how did their decisions shape present-day Europe and Asia?