Walter Edward Guinness, 1st Baron Moyne, DSO & Bar, PC, was an Anglo-Irish politician and businessman. He served as the British minister of state in the Middle East until November 1944, when he was assassinated by the Jewish terrorist group Lehi in Cairo. The assassination of Lord Moyne sent shock waves through Palestine and the rest of the world.

Lehi, often known pejoratively as the Stern Gang, was a Zionist paramilitary militant organization founded by Avraham ("Yair") Stern in Mandatory Palestine. Its avowed aim was to evict the British authorities from Palestine by use of violence, allowing unrestricted immigration of Jews and the formation of a Jewish state. It was initially called the National Military Organization in Israel, upon being founded in August 1940, but was renamed Lehi one month later. The group referred to its members as terrorists and admitted to having carried out terrorist attacks.