The Soviet Union was not invited to the critical Munich conference in late September 1938, where Britain, France and Italy appeased Hitler by giving in to his demands to take over the Sudetenland, a largely German-speaking area of Western Czechoslovakia. Distrust was high in all directions. Leaders in London and Paris felt that Stalin wanted to see a major war between the capitalist nations Germany on the one hand, and Britain and France on the other, in order to advance the prospects of a working-class revolution in Europe. Meanwhile, Stalin felt the Western Powers were plotting to embroil Germany and Russia in war in order to preserve bourgeois capitalism. After Hitler took over all of Czechoslovakia in 1939, proving appeasement was a disaster, Britain and France tried to involve the Soviet Union and a real military alliance. Their attempts were futile because Poland refused to allow any Soviet troops on its soil.