When anyone spoke of modern theatre a few years ago, he mentioned the Moscow, the New York or the Berlin theatre. He may also have spoken of a particular production of Jouvet's in Paris, of Cochran's in London, or the Habima performance of The Dybbuk, which, in fact, belonged to Russian theatre since it was directed by Vakhtangov; but by and large, there were only three capitals so far as modern theatre was concerned.

The Russian, the American and the German theatres were very different from one another, but they were alike in being modern, i.e., in introducing technical and artistic innovations. In a certain sense they even developed stylistic similarities, probably because technique is international (not only the technique directly required for the stage, but also that which exerts an influence on it, the film, for example) and because the cities in question were great progressive cities in great industrial countries.