Chinese Foreign Minister Yang Jiechi, center, arrives at Kabul International Airport on Tuesday July 20, 2010. Afghanistan opened on Tuesday an international conference on the future of Afghanistan where representatives of 70 nations and organizations were endorsing a plan for how Afghan security forces would eventually take charge, but it's still unclear when the transition would actually begin.

(AP) United Arab Emirates Foreign Minister Sheikh Abdullah bin Zayed Al Nahyan, center, shakes hands with an Afghan official as he arrives at Kabul International Airport on Tuesday July 20, 2010. Afghanistan opened on Tuesday an international conference on the future of Afghanistan where representatives of 70 nations and organizations were endorsing a plan for how Afghan security forces would eventually take charge, but it's still unclear when the transition would actually begin.

(AP) Afgan President Hamid Karzai, 2nd left, and U.S. Secretary of State Hillary Clinton, right, tour a crafts bazaar in Kabul on Tuesday July 20, 2010, as they attend an international conference on Afghanistan.