Hersch Lauterpacht was a strong proponent of international adjudication. He was perhaps the foremost exponent among international lawyers for a strong role for the international judiciary in preventing war and resolving disputes between states. He was a particularly strong backer of the Permanent Court of International Justice, which was created by the League of Nations. He wrote that advisory opinions were important in providing advice that might lead to the resolution of disputes. In this situation, however, he opposed reference to the International Court of Justice, which had replaced the Permanent Court of International Justice, of the question of the legal status of Palestine and the legality of the declaration of a Jewish state.