The British Armed Forces, also known as Her Majesty's Armed Forces, are the military services responsible for the defence of the United Kingdom, its overseas territories and the Crown dependencies. They also promote the UK's wider interests, support international peacekeeping efforts and provide humanitarian aid.
The United Kingdom is one of five recognised nuclear powers, is a permanent member on the United Nations Security Council, is a founding and leading member of the NATO military alliance, and is party to the AUKUS security pact and the Five Power Defence Arrangements. Overseas garrisons and training facilities are maintained at Ascension Island, Bahrain, Belize, Bermuda, British Indian Ocean Territory, Brunei, Canada, Cyprus, the Falkland Islands, Germany, Gibraltar, Kenya, Montserrat, Nepal, Qatar, Singapore and the United States.