One of the most widely remarked-on of Józef Piłsudski's foreign-policy moves was his rumored proposal to France to declare war on Germany after Hitler had come to power in January 1933. Some historians write that Piłsudski may have sounded out France regarding the possibility of joint military action against Germany, which had been openly rearming in violation of the Versailles Treaty. France's refusal might have been one of the reasons Poland signed the German–Polish Non-Aggression Pact in January 1934. However, the argument that the German-Polish non-aggression pact had been forced on Piłsudski by French refusal to wage a "preventive war" has been disputed by historians who point out that there is no evidence in either the French or Polish diplomatic archives that such a proposal was eve