The Clarté group of progressive writers and cultural workers was organized by Henri Barbusse in 1919 on the basis ofl'Association Républicaine des Anciens Combattants. Similar groups were set up in other countries, and together they formed the War Veterans International, whose main motto was: War on war. The Clarté
group included supporters of the Third International -- Henri Barbusse, Anatole France, Paul Vaillant-Couturier -- and pacifist writers -- Romain Rolland, Stefan Zweig, H. G. Wells, Thomas Hardy, Upton Sinclair, Jules Romain, and others. The group published a monthly magazine of the same name (in Paris from October 1919 to January 1928), which in its first years was quite popular in France and abroad. However, the ideological disagreements within the group and its organisational weakness did not permit it to become a large and influential organization. Soon after Barbusse resigned as editor (in April 1924), the magazine lost its progressive significance. It ceased publication in 1928 and the group disintegrated.