Question: Who is the British Conservative politician who served three periods as Foreign Secretary against the Labour Party?

Context articles: George Brown, Baron George-Brown
United Kingdom general election, 2015 (Scotland)
Samuel Hoare, 1st Viscount Templewood
Clement Attlee
United Kingdom general election, 1955
Peter Carington, 6th Baron Carrington
Anthony Eden
Margaret Beckett
Hilary Benn
Anthony Crosland

George Alfred Brown, Baron George-Brown, {'1': ", '2': ", '3': ", '4': "} (2 September 1914 – 2 June 1985) was a British Labour politician who served as Deputy Leader of the Labour Party from 1960 to 1970 and also in several Cabinet posts, including Foreign Secretary during the Labour government of the 1960s.
 He was a leader of the Labour Party's trade union right wing, and an effective election campaigner.
 Ultimately, however, he was unable to cope with the pressures of high office without excessive drinking.
 He was always known simply as "George Brown" and, upon being granted a peerage in November 1970, he insisted on combining his first name and surname to create the title Baron George-Brown of Jevington in the County of Sussex.
The 2015 United Kingdom general election in Scotland was held on 7 May 2015 and all 59 seats were contested under the First past the post electoral system.
 Unlike the 2010 General Election, where no seats changed party, the Scottish National Party (SNP) managed to win all but three seats in Scotland in an unprecedented landslide gaining a total of fifty-six seats and also become the first party in sixty years to win 50% of the Scottish vote.
 It saw the Labour Party suffer its worst ever election defeat within Scotland losing 40 of the 41 seats they were defending, including the seats of Scottish Labour Party leader Jim Murphy and also the then Shadow Foreign Secretary Douglas Alexander.
 The Liberal Democrats lost ten of the eleven seats they were defending with the then Chief Secretary to the Treasury Danny Alexander and former leader Charles Kennedy also losing their seats.
 The election also saw the worst performance by the Conservative Party which received its lowest share of the vote since its creation in 1965, although it retained the one seat that it previously held.
 In all, 50 of the 59 seats changed party, 49 of them being won by first-time MPs.
Samuel John Gurney Hoare, 1st Viscount Templewood, {'1': ", '2': ", '3': ", '4': "} (24 February 1880 – 7 May 1959), more commonly known as Sir Samuel Hoare, was a senior British Conservative politician who served in various Cabinet posts in the Conservative and National governments of the 1920s and 1930s.
 He was Secretary of State for Air during most of the 1920s and briefly again in 1940.
 He is perhaps most famous for serving as Foreign Secretary in 1935, when he authored the Hoare–Laval Pact with French Prime Minister Pierre Laval.
 In 1936 he became First Lord of the Admiralty, then served as Home Secretary from 1937 to 1939 and was British ambassador to Spain from 1940 to 1944.
Clement Richard Attlee, 1st Earl Attlee, {'1': ", '2': ", '3': ", '4': "} (3 January 1883 – 8 October 1967) was a British Labour politician who served as Prime Minister of the United Kingdom from 1945 to 1951 and Leader of the Labour Party from 1935 to 1955.
 In 1940, Attlee took Labour into the wartime coalition government and served under Winston Churchill, becoming the first person to hold the office of Deputy Prime Minister of the United Kingdom.
 He went on to lead the Labour Party to an unexpected landslide victory at the 1945 general election; forming the first Labour majority government, and a mandate to implement its postwar reforms.
 The 12.0% national swing from the Conservatives to Labour was unprecedented at that time and remains the largest ever achieved by any party at a general election in British electoral history.
 He was re-elected with a narrow majority at the 1950 general election.
 In the following year, Attlee called a snap general election, hoping to increase his parliamentary majority.
 However, he was narrowly defeated by the Conservatives under the leadership of Winston Churchill; despite winning the most votes of any political party in any general election in British political history until the Conservative Party's fourth consecutive victory in 1992.
 Attlee remains the longest-ever serving Leader of the Labour Party.
The 1955 United Kingdom general election was held on 26 May 1955, four years after the previous general election.
 It resulted in a substantially increased majority of 60 for the Conservative government under new leader and prime minister Sir Anthony Eden against the Labour Party, then in their twentieth year of leadership by Clement Attlee.
Peter Alexander Rupert Carington, 6th Baron Carrington, (born 6 June 1919) is a British Conservative politician and hereditary peer who served as Defence Secretary between 1970 and 1974, Foreign Secretary between 1979 and 1982, chairman of General Electric between 1983 and 1984, and Secretary General of NATO from 1984 to 1988.
 He is the last surviving member of the 1951–55 government of Winston Churchill, the Eden government, and the Macmillan government and of the cabinets of Alec Douglas-Home and Edward Heath.
 Following the House of Lords Act 1999, which removed the automatic right of hereditary peers to sit in the House of Lords, Carrington was created a life peer as Baron Carington of Upton, of Upton in the County of Nottinghamshire.
Robert Anthony Eden, 1st Earl of Avon, (12 June 1897 – 14 January 1977) was a British Conservative politician who served three periods as Foreign Secretary and then a relatively brief term as Prime Minister of the United Kingdom from 1955 to 1957.
Dame Margaret Mary Beckett, {'1': ", '2': ", '3': ", '4': "} (née Jackson; born 15 January 1943) is a British Labour Party politician who has been the Member of Parliament (MP) for Derby South since 1983.
 She was the Deputy Leader of the Labour Party under John Smith from 1992 to 1994, and briefly served as Leader of the Labour Party after Smith died suddenly.
 She later served in the Cabinet under Prime Minister Tony Blair in a number of roles, becoming Britain's first female Foreign Secretary in 2006.
Hilary James Wedgwood Benn (born 26 November 1953) is a British Labour Party politician who has been the Member of Parliament (MP) for Leeds Central since the by-election in 1999.
 He served in the cabinet from 2003–10, under the premierships of both Tony Blair and Gordon Brown.
 From 2010–16, he served in various Labour Party shadow cabinets, most recently as Shadow Foreign Secretary from May 2015 until June 2016, when he was dismissed by Labour leader Jeremy Corbyn.
 In October 2016, he was elected as the Chair of the new Exiting the European Union Select Committee.
Charles Anthony Raven Crosland (29 August 1918 – 19 February 1977), otherwise Tony Crosland or C.A.R. Crosland, was a British Labour Party politician and author.
 He served as Member of Parliament for South Gloucestershire and later for Great Grimsby.
 Throughout his long career he occupied the cabinet positions of Secretary of State for Education and Science, President of the Board of Trade, Secretary of State for Local Government and Regional Planning and Foreign Secretary.
 A prominent socialist intellectual, he became one of the Labour Party's revisionists on the right, as an intellectual leader of Gaitskellism.
 His highly influential book "The Future of Socialism" (1956) argued against many Marxist notions and Labour Party orthodoxy that public ownership was essential to make socialism work.
 He offered positive alternatives to both right and left wings of his Labour Party.
 He questioned the need for public ownership of the means of production – the classic socialist formulation – and argued instead for making the highest priority the end of poverty and improved public services.
 He led the Labour battle to replace grammar schools with comprehensive schools that did not sort students at age 11.
 As foreign secretary he promoted détente with the Soviet Union.