There are 193 member states in the United Nations as of 2025. The most recent member to join was South Sudan in 2011, making it the 193rd member state.

The UN headquarters is located in New York City, USA, on international territory overlooking the East River. The complex was completed in 1952 and serves as the primary meeting place for the General Assembly and Security Council.

The UN Security Council has 5 permanent members: United States, Russia, China, France, and United Kingdom. These permanent members have veto power over Security Council resolutions.

The six official languages of the UN are English, French, Spanish, Chinese (Mandarin), Russian, and Arabic. These languages are used in all UN meetings and all official UN documents are published in these languages.

The Security Council is the UN organ with primary responsibility for maintaining international peace and security. It has the power to authorize the use of force and impose sanctions.

UNESCO stands for United Nations Educational, Scientific and Cultural Organization. It aims to promote world peace and security through international cooperation in education, arts, sciences, and culture.

The UN Charter is the foundational document that established the United Nations. It was signed on June 26, 1945, in San Francisco and came into force on October 24, 1945.

The International Court of Justice (ICJ) is the principal judicial organ of the United Nations. It is located in The Hague, Netherlands, and settles legal disputes between states.

United Nations Day is celebrated on October 24th each year, commemorating the anniversary of the UN Charter coming into force in 1945.