<human>:  Explain the purpose of the United Nations.
<bot>: The United Nations is an international organization formed in 1945 to promote international peace, security, and cooperation among its member states. The mission of the United Nations is to bring countries together to work towards achieving common goals and solving global problems. These goals include promoting human rights, protecting the environment, providing humanitarian aid, and maintaining international security. The United Nations also works to create a platform for dialogue and diplomacy in order to resolve conflicts between nations and promote peaceful solutions.