David Cameron Visits Troops In Afghanistan

HELMAND PROVINCE, AFGHANISTAN - DECEMBER 21: The "Fax Bluey" message to all of the bases in Afghanistan, written by Britain's Prime Minister David Cameron, is displayed in the post office at Camp Bastion, outside Lashkar Gah on December 20, 2012 in Helmand Province, Afghanistan. Prime Minister Cameron is making a Christmas visit to British troops in the region amid tight security. (Photo by Stefan Wermuth - WPA Pool/Getty Images)