This book’s title From the Third World War to the End of Capitalism was created by the Editorial Board. The book contains a selection of texts by J Posadas from 1970 to 1981, as well as Trotsky’s text "The USSR in War" of 25.9.1939.The texts we present by J. Posadas bear on the fundamental question of the inevitability of war on the part of the capitalist regime, and in consequence the inevitability of the Third World War. It is vital for humanity to put an end to the capitalist regime therefore. The selected texts are drawn from a number of conferences, publications and books by J Posadas with titles like "The Soviet Union", "Workers’ State and Socialist Society", "The Crisis of Capitalism, War and Socialism". The dates of these texts range from 1970 to when he died in 1981.