Winston Churchill

Sir Winston Leonard Spencer-Churchill (1874–1965) was a British politician, military officer, and writer who served as Prime Minister of the United Kingdom from May 1940 to July 1945 and again from October 1951 to April 1955. He is widely associated with British resistance to Nazi Germany and with the early articulation of the Cold War's ideological boundaries.

Before becoming Prime Minister, Churchill held a long string of cabinet posts under both Liberal and Conservative governments, including President of the Board of Trade, Home Secretary, First Lord of the Admiralty (twice), Secretary of State for War, Secretary of State for the Colonies, and Chancellor of the Exchequer. His political career spanned more than six decades and two world wars.

As wartime Prime Minister, Churchill led a coalition government following Neville Chamberlain's resignation in May 1940. He worked closely with U.S. President Franklin D. Roosevelt and Soviet leader Joseph Stalin, meeting at the Atlantic Conference (1941), Tehran (1943), Yalta (February 1945), and Potsdam (July 1945, where he was replaced mid-conference by Clement Attlee after Labour's election victory).

Churchill is also remembered for several speeches and concepts central to international relations vocabulary:

• The "Iron Curtain" speech, delivered at Westminster College in Fulton, Missouri, on 5 March 1946, helped frame the emerging East–West divide.
• His advocacy of a "United States of Europe" in a Zürich speech on 19 September 1946 influenced early European integration debates.
• His wartime addresses to the House of Commons ("blood, toil, tears and sweat"; "we shall fight on the beaches"; "their finest hour") are frequently cited in studies of political rhetoric.

Churchill received the Nobel Prize in Literature in 1953, principally for his historical works including The Second World War (six volumes, 1948–1953) and later A History of the English-Speaking Peoples. His legacy is contested: he is celebrated for wartime leadership but criticised for views on empire and for decisions such as the handling of the 1943 Bengal famine.