In Jan., 1928, Trotsky was exiled to Alma-Ata (now Almaty, Kazakhstan), and in 1929 he was ordered to leave the USSR. Refused admission by most countries, he was granted asylum by Turkey, where he lived on the Princes' Islands near İstanbul. In 1933 he was allowed to move to France, and in 1935 he found refuge in Norway. In the public treason trials held at Moscow in 1936, 1937, and 1938, Trotsky was charged with heading a plot against the Stalinist regime. The accusations, which Trotsky bitterly denied, cloaked Stalin's real purpose of purging the party ranks of all who might prove disloyal to him. In Dec., 1936, the Soviet government obtained the expulsion of Trotsky from Norway, and he settled with his family in a suburb of Mexico City. There, on Aug. 20, 1940, he was assassinated by Ramón Mercader, a Spanish Communist and possible agent of Stalin.