An organ of the United Nations Organization (UNO) whose decision is binding on all members is the

The organ of the United Nations Organization (UNO) whose decision is binding on all members is the International Court of Justice (ICJ). The ICJ is the principal judicial organ of the UNO, and it settles legal disputes between states and gives advisory opinions on legal questions referred to it by authorized UN organs and specialized agencies. The ICJ is composed of 15 judges elected by the UN General Assembly and the UN Security Council for a term of nine years. Its decisions are binding on the parties involved in a dispute and are final and without appeal. The ICJ also has the power to issue provisional measures to prevent irreparable harm to the parties involved in a dispute pending the final resolution of the case. The ICJ plays an important role in promoting international law and resolving disputes peacefully through legal means. Its decisions are based on international law, including treaties and conventions, as well as customary international law and general principles of law recognized by civilized nations.