CAMP DAVID, MD - MARCH 23:  (L-R) U.S. Treasury Secretary Jack Lew, Afghanistan President Ashraf Ghani, U.S. Secretary of State John Kerry, Afghanistan Chief Executive Abdullah Abdullah and U.S. Secretary of Defense Ashton Carter appear for photographs before sitting down for meetings at Camp David March 23, 2015 in Camp David, Maryland. After a series of meetings about security, economic development, American support for the Afghan-led reconciliation process, the four leaders will hold a news conference.  (Photo by Chip Somodevilla/Getty Images)