On 23 January 1920, the government of the Netherlands refused to extradite the former Kaiser of Germany, Wilhelm II. His aggressive foreign policy and support for Austro-Hungary in 1914 led to the first world war. After the signing of the Treaty of Versailles in 1919, he was charged with "a supreme offence against international morality and the sanctity of treaties" and the allies demanded his extradition. Queen Wilhelmina of the Netherlands refused and granted him political asylum