The United Nations (UN) is an international organization founded in 1945, aimed at promoting peace, security, and cooperation among countries. It consists of 193 member states and works on various global issues, including human rights, development, and humanitarian aid. The UN operates through various specialized agencies, such as the World Health Organization and the United Nations Children's Fund, to address specific challenges. Its mission is to foster international collaboration and prevent conflicts, making it a crucial player in global diplomacy and development efforts.