In a time of crisis or war, any personal decision by a national leader can change the course of history. Some of the great leaders and dictators of the 20th century - Churchill, Hitler, Stalin, De Gaulle and Roosevelt - all had to make important decisions that plunged millions of people into danger. Told like a thriller, each episode of this series brings these pivotal moments in modern history back to life.

Travel back to the moments in history when famous figures were about to make some of the most important decisions of all time. Archive material and gripping dramatisations reveal why these men chose the paths they did and how it changed the course of events forever.

Last Aired Episode: The Day When... - Season - 1 - Episode - 5 - The Day When... Stalin Won The War - 2018-03-21