The Fourth International was proclaimed 75 years ago, after a 15-year struggle against Stalinism.
Just as the main body of the Communist International came out of the Second International, so the roots of the Fourth International are to be traced to the beginnings of the crisis in the Third.
Fifteen years have elapsed since the movement now organized under the banner of the Fourth International first took shape. It arose in the form of the Opposition in the Russian Communist Party, variously called the "Moscow" or "1923" or "Trotskyist" Opposition. Uniting the best elements of the Old Guard and of the youth of the Party, and led