Afghanistan's Chief Executive Abdullah Abdullah, right, shakes hands with Britain's Prime Minister David Cameron, left, at the presidential palace in Kabul, Afghanistan, Friday, Oct. 3, 2014. Cameron on Friday pledged support for Afghanistan's newly sworn-in president and the country's new unity government, saying during a surprise visit to Kabul that Britain is committed to helping Afghans build a more secure and prosperous future. (AP Photo/Massoud Hossaini, Pool)