By 1938 Strachey was persuaded by Keynesianism and the New Deal of American president Franklin D. Roosevelt. In 1940 he published "A Programme for Progress". Strachey became increasingly unhappy with the Communist movement following the Molotov–Ribbentrop Pact and the Soviet Invasion of Finland. In a letter to the "New Statesman" Strachey claimed the Communists "are prepared, for the sake of the ... Soviet Union, to give way to Hitler to any extent, and they are utterly irresponsible as to the consequences to the British people of such unlimited giving way. So long as that remains the case I ... can have nothing to do with them." He broke with the CPGB in April 1940.