The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) and Britain, is a sovereign state located off the north-western coast of continental Europe. The country includes the island of Great Britain, the north-eastern part of the island of Ireland and many smaller islands.Northern Ireland is the only part of the UK that shares a land border with another state—the Republic of Ireland. Apart from this land border, the UK is surrounded by the Atlantic Ocean in the west and north, the North Sea in the east, the English Channel in the south and the Irish Sea in the west.
The UK's form of government is a constitutional monarchy with a parliamentary system and its capital city is London. It consists of four countries: England, Scotland,Wales and Northern Ireland. The latter three have devolved administrations, each with varying powers, based in their capital cities, Edinburgh, Cardiffand Belfast respectively. Guernsey, Jersey and the Isle of Man are Crown dependencies and are not part of the UK. The United Kingdom has fourteen British Overseas Territories. These are remnants of the British Empire which, at its height in the late 19th and early 20th centuries, encompassed almost a quarter of the world's land surface and was the largest empire in history. British influence can be observed in the language, culture and legal systems of many of its former colonies.
The United Kingdom is a developed country and has the world's sixth-largest economy by nominal GDP and eighth-largest economy by purchasing power parity. It was the world's first industrialised country and the world's foremost power during the 19th and early 20th centuries. The UK remains a great power with considerable economic, cultural, military, scientific and political influence internationally. It is a recognised nuclear weapons state and its military expenditure ranks fourth in the world.
The UK has been a permanent member of the United Nations Security Council since its first session in 1946. It has been a member of the European Union and its predecessor the European Economic Community since 1973; it is also a member of the Commonwealth of Nations, the Council of Europe, the G7, the G8, the G20,NATO, the Organisation for Economic Co-operation and Development (OECD) and the World Trade Organization.
Foreign relations
The UK is a permanent member of the United Nations Security Council, a member of NATO, the Commonwealth of Nations, G7, G8,G20, the OECD, the WTO, the Council of Europe, the OSCE, and is a member state of the European Union. The UK is said to have a "Special Relationship" with the United States and a close partnership with France—the "Entente cordiale"—and shares nuclear weapons technology with both countries. The UK is also closely linked with the Republic of Ireland; the two countries share a Common Travel Area. Britain's global presence and influence is further amplified through its trading relations, foreign investments, official development assistance and military engagements.
Military
According to various sources, including the Stockholm International Peace Research Institute and the Ministry of Defence, the United Kingdom has the fourth-highest military expenditure in the world. Total defence spending currently accounts for around 2.3 – 2.6% of total national GDP.
The Armed Forces are charged with protecting the UK and its overseas territories, promoting the UK's global security interests and supporting international peacekeeping efforts. They are active and regular participants in NATO, including the Allied Rapid Reaction Corps, as well as the Five Power Defence Arrangements, RIMPAC and other worldwide coalition operations. Overseas garrisons and facilities are maintained in Ascension Island, Belize, Brunei, Canada, Cyprus, Diego Garcia, the Falkland Islands, Germany,Gibraltar, Kenya and Qatar.
The Royal Navy is a prominent blue-water navy, currently one of only three world wide, with the French Navy and the United States Navy being the other two. As well as being responsible for delivering the UK's nuclear deterrent via the UK Trident programme and four Vanguard class submarines, the Royal Navy operates a large operational fleet of ships, including an aircraft carrier, a helicopter carrier, landing platform docks, nuclear fleet submarines, guided missile destroyers, frigates, mine-countermeasure vessels andpatrol vessels. In the near future two new aircraft carriers, HMS Queen Elizabeth and HMS Prince of Wales will enter service in the Royal Navy. The United Kingdom Special Forces, such as the Special Air Service and Special Boat Service, provide troops trained for quick, mobile, military responses in counter-terrorism, land, maritime and amphibious operations, often where secrecy or covert tactics are required.
Historically, the British armed forces played a key role in establishing the British Empire as the dominant world power in the 19th century. British forces have seen action in a number of major wars, such as the Seven Years' War, the Napoleonic Wars, the Crimean War, World War I and World War II—as well as many colonial conflicts. Through its military strength, Britain has often been able to decisively influence world events. Since the end of the British Empire, the UK has nonetheless remained a major military power. The British military is among the largest and most technologically sophisticated in the world. Recent defence policy has a stated assumption that "the most demanding operations" will be undertaken as part of a coalition. Setting aside the intervention in Sierra Leone, recent UK military operations in Bosnia, Kosovo, Afghanistan, Iraq and, most recently, Libya, have followed this approach. The last time the British military fought alone was the Falklands War of 1982.
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