Ad hoc chambers are more often convened. For example, chambers were used to hear the case of the Gulf of Maine (Canada/United States).  In this case, the parties have made it clear that they will withdraw the case, unless the Tribunal has appointed judges in the chamber acceptable to the parties. Chamber decisions may either have less authority than full court decisions or reduce the correct interpretation of universal international law, characterized by a large number of cultural and legal perspectives. On the other hand, the use of chambers could promote greater recourse to the Tribunal and thus improve the international settlement of disputes.  After a peak of activity in 1933, the CPII began to decline in its activities due to the growing international tensions and isolationism that characterized the era. The Second World War actually ended the Court, which in December 1939 held its last public hearing and made its last orders in February 1940. A second Hague Conference in 1907, in which most of the world`s sovereign states participated, revised the Convention and improved the rules of arbitration before the PCA. During this conference, the United States, Great Britain and Germany presented a joint proposal for a permanent tribunal whose judges were to serve full-time. As the delegates were unable to agree on how to choose the judges, the case was temporarily suspended until an agreement was reached at a subsequent convention. .