 The project had less support in the Czechoslovak government-in-exile, which believed it did not need Polish support against the Soviet Union, and was eventually sunk by the growing Soviet dominance, as Joseph Stalin did not want a strong and independent federation in Europe that could threaten his designs for Eastern Europe.Soon after the Polish defeat in the Polish September Campaign, both the Polish and Czechoslovak governments (Czechoslovakia having been reduced to a German puppet state following the Munich Agreement) formed in exile in the West.However, despite a common enemy, Czechoslovakia–Poland relations were less than friendly because of Polish–Czechoslovak border conflicts.