The Pact of Locarno, named after the small city in southern Switzerland, was a series of agreements whereby Germany, France, Belgium, Great Britain and Italy mutually guaranteed peace in western Europe.

This image shows statesmen from the countries officially signing the Treaty in the Grand Assembly Room at the Foreign Office in London on 1 December 1925. It has been said that although it finally ended World War I, it marked the prelude to World War II.

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