Countdown to War

Countdown to War is a television film made in 1989 as a co-production by Granada Television and PBS. It recounts the events that occurred between 15 March 1939, when the German army commanded by Adolf Hitler invaded Czechoslovakia and created the Protectorate of Bohemia and Moravia, and 3 September 1939, the date when France and United Kingdom declared war on Germany. The film is divided into 5 different stages: Mussolini's study, Hitler's Chancellery, Stalin's Kremlin, Beck’s bedroom, and Chamberlain's Cabinet. The script is based on private letters, diaries and records of meetings between the different leaders. The film starred Ian McKellen, Michael Aldridge, Alex Norton and Barrie Rutter.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.