What is the International Court of Justice ? The Court is the principal judicial organ of the United Nations. It was established by the United Nations Charter, which was signed in 1945 in San Francisco (United States), and began work in 1946 in the Peace Palace, The Hague (Netherlands). The Court , which is composed of 15 judges, has a twofold role: first, to settle, in accordance with international law, legal disputes between States submitted to it by them and, second, to give advisory ... Learn about the history, structure, jurisdiction, and functioning of the ICJ, the principal judicial organ of the UN. Find out how it settles legal disputes between states and provides advisory opinions on legal questions. The International Court of Justice acts as a world court . The Court ’s jurisdiction is twofold: it decides, in accordance with international law, disputes of a legal nature that are submitted to it by States (jurisdiction in contentious cases); and it gives advisory opinions on legal questions at the request of the organs of the United Nations, specialized agencies or one related organization authorized to make such a request (advisory jurisdiction). International Court of Justice (ICJ), the principal judicial organ of the United Nations (UN). The idea for the creation of an international court to arbitrate international disputes first arose during the various conferences that produced the Hague Conventions in the late 19th and early 20th centuries.