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LONDON, ENGLAND - NOVEMBER 27: Light trails from vehicles passing in front of the Houses of Parliament are seen on November 27, 2009 in London, England. In a speech to the House of Commons on November 30, 2009 Prime Minister Gordon Brown confirmed that Britain is to send a further 500 troops to Afghanistan. (Photo by Oli Scarff/Getty Images)

LONDON, ENGLAND - NOVEMBER 27: Light trails from vehicles passing in front of the Houses of Parliament are seen on November 27, 2009 in London, England. In a speech to the House of Commons on November 30, 2009 Prime Minister Gordon Brown confirmed that Britain is to send a further 500 troops to Afghanistan.  (Photo by Oli Scarff/Getty Images)