Boris Johnson

Alexander Boris de Pfeffel Johnson (born 19 June 1964) is a British politician, popular historian and journalist who has served as Mayor of London since 2008 and as Member of Parliament (MP) for Uxbridge and South Ruislip since 2015. Johnson previously served as the MP for Henley from 2001 until 2008. A member of the Conservative Party, Johnson considers himself a One Nation Conservative and has been described as a libertarian due to his association with both economically liberal and socially liberal policies.

Born in New York City to upper middle class English parents, Johnson was educated at the European School of Brussels, Ashdown House School, and Eton College. He read Classics at Balliol College, Oxford, where he was a member of the Bullingdon Club and was elected President of the Oxford Union in 1986. Beginning his career in journalism at The Times, he later became The Daily Telegraph's Brussels correspondent, with his articles exerting a strong influence on growing Eurosceptic sentiment among the British right-wing. He became assistant editor from 1994 to 1999 before taking the editorship of The Spectator from 1999 to 2005. Joining the Conservatives, he was elected to the House of Commons as MP for Henley in 2001. Making regular television appearances as well as continuing with his journalism and book writing, Johnson became one of the most conspicuous politicians in the country. Under the Conservative leaders Michael Howard and David Cameron, Johnson served on the opposition front bench, first as Shadow Minister for Culture, Communications and Creative Industries and then for Higher Education.

Tactical nuclear weapon

A tactical nuclear weapon (or TNW) also known as non-strategic nuclear weapon refers to a nuclear weapon which is designed to be used on a battlefield in military situations. This is opposed to strategic nuclear weapons which are designed to be used against enemy cities, factories, and other larger-area targets to damage the enemy's ability to wage war. Tactical nuclear weapons were a large part of the peak nuclear weapons stockpile levels during the Cold War.

Types

Tactical weapons include not only gravity bombs and short-range missiles, but also artillery shells, land mines, depth charges, and torpedoes for anti-submarine warfare. Also in this category are nuclear armed ground-based or shipborne surface-to-air missiles (SAMs) and air-to-air missiles.

Small, two-man portable, or truck-portable, tactical weapons (sometimes misleadingly referred to as suitcase nukes), such as the Special Atomic Demolition Munition and the Davy Crockett recoilless rifle (recoilless smoothbore gun), have been developed, although the difficulty of combining sufficient yield with portability could limit their military utility. In wartime, such explosives could be used for demolishing "choke-points" to enemy offensives, such as at tunnels, narrow mountain passes, and long viaducts.

Nuclear weapon

A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion (thermonuclear weapon). Both reactions release vast quantities of energy from relatively small amounts of matter. The first fission ("atomic") bomb test released the same amount of energy as approximately 20,000 tons of TNT (see Trinity (nuclear test)). The first thermonuclear ("hydrogen") bomb test released the same amount of energy as approximately 10,000,000 tons of TNT.

A thermonuclear weapon weighing little more than 2,400 pounds (1,100 kg) can produce an explosive force comparable to the detonation of more than 1.2 million tons (1.1 million tonnes) of TNT. A nuclear device no larger than traditional bombs can devastate an entire city by blast, fire, and radiation. Nuclear weapons are considered weapons of mass destruction, and their use and control have been a major focus of international relations policy since their debut.