The desperate scramble to evacuate the US embassy at the end of the Vietnam war in 1975, also the 1940s Indian radio station calling for independence. We'll look at life as a 'human shield' in Iraq under Saddam, the man who invented the term 'genocide' and why, and the messy diplomatic embarrassment of Nicolae Ceaușescu's visit to The Queen in 1978.

(Photo: A CIA employee helps Vietnamese evacuees onto an Air America helicopter from the top of 22 Gia Long Street, a half mile from the U.S. Embassy. April 1975. Getty Images.)