The UK and international institutions
The Commonwealth is an association of countries that support each other and work together towards shared goals in democracy and development. Most member states were once part of the British Empire, although a few countries which were not have also joined.
The King is the ceremonial head of the Commonwealth, which currently has 54 member states. Membership is voluntary. The Commonwealth has no power over its members, although it can suspend membership. The Commonwealth is based on the core values of democracy, good government and the rule of law.
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St Vincent and the Grenadines
The Council of Europe has 47 member countries, including the UK, and is responsible for the protection and promotion of human rights in those countries. It has no power to make laws but draws up conventions and charters, the most well-known of which is the European Convention on Human Rights and Fundamental Freedoms, usually called the European Convention on Human Rights.
The UK is part of the United Nations (UN), an international organisation with more than 190 countries as members.
The UN was set up after the Second World War and aims to prevent war and promote international peace and security. There are 15 members on the UN Security Council, which recommends action when there are international crises and threats to peace. The UK is one of five permanent members of the Security Council.
The North Atlantic Treaty Organization (NATO)
The UK is also a member of NATO. NATO is a group of European and North American countries that have agreed to help each other if they come under attack. It also aims to maintain peace between all of its members.