The international organization formed after the Second World War to guarantee international peace and security is called the

The international organization formed after the Second World War to guarantee international peace and security is called the United Nations Organization (UNO). The UNO was established on October 24, 1945, with the aim of promoting cooperation among nations, maintaining peace and security, and resolving conflicts through peaceful means. It is currently made up of 193 member states and operates through various bodies such as the General Assembly, Security Council, and International Court of Justice.