The UN was founded in 1945 after World War II to promote international cooperation and prevent future wars. It has six main organs: the General Assembly, Security Council, Economic and Social Council, Trusteeship Council, International Court of Justice, and Secretariat. The Security Council works to maintain peace and security, while other agencies focus on human rights, development, and other issues. When Iraq invaded Kuwait in 1990, the Security Council passed resolutions demanding Iraq's immediate withdrawal.