The assassination of Trotsky in August 1940 dealt a devastating blow to the young and untested forces of the Fourth International. Unfortunately, the leaders of the Fourth were not up to the level of the tasks posed by history. Deprived of Trotsky's leadership they made a series of fundamental mistakes. Only the leadership of the RCP in Britain was able to readjust to the new situation on a world scale after 1945. This was the result of the theoretical capabilities of Ted Grant. His writings on economics, war, the colonial revolution, and particularly Stalinism, were, and still remain, classics of modern Marxism.