The refugee dilemma in Europe in the years between the two world wars had a number of aspects: humanitarian, political, and diplomatic. It raised questions of migration, questions of international law, and questions of the fate of hundreds of thousands of individuals. Refugees were visible from the very last days of the war and remained a matter of serious international concern even beyond the outbreak of war again in September 1939. The refugee dilemma in Europe was, firstly, a humanitarian crisis because the size of the refugee population was without precedent. It was also a political problem because national governments had to contend with questions about the refugees' legal status and their legitimacy under national and international law, as well as balance humanitarian concerns with national political interests. The humanitarian and political aspects together created a crisis for the international community newly united in the League of Nations. One of its first great acts-to take these refugees into its protective care-was not even prescribed for it in its Covenant. But the refugee crisis facing Europe was so great that member states were united in the belief that the League had been established precisely to undertake a task of this kind.