An international court had long been proposed; Pierre Dubois suggested it in 1305 and Émeric Crucé in 1623. An idea of an international court of justice arose in the political world at the First Hague Peace Conference in 1899, where it was declared that arbitration between states was the easiest solution to disputes, providing a temporary panel of judges to arbitrate in such cases, the Permanent Court of Arbitration. At the Second Hague Peace Conference in 1907, a draft convention for a permanent Court of Arbitral Justice was written although disputes and other pressing business at the Conference meant that such a body was never established, owing to difficulties agreeing on a procedure to select the judges. The outbreak of the First World War, and, in particular, its conclusion made it clear to many academics that some kind of world court was needed, and it was widely expected that one would be established. Article 14 of the Covenant of the League of Nations, created after the Treaty of Versailles, allowed the League to investigate setting up an international court. In June 1920, an Advisory Committee of jurists appointed by the League of Nations finally established a working guideline for the appointment of judges, and the Committee was then authorised to draft a constitution for a permanent court not of arbitration but of justice. The Statute of the Permanent Court of International Justice was accepted in Geneva on December 13, 1920.