
Defense Secretary Leon Panetta listens April 18, 2012, during a joint news conference with Secretary of State Hillary Rodham Clinton at NATO Headquarters in Brussels, Belgium, to a question about photographs published in the Los Angeles Times of soldiers posing with dead insurgents. (Associated Press)

Defense Secretary Leon Panetta listens April 18, 2012, during a joint news conference with Secretary of State Hillary Rodham Clinton at NATO Headquarters in Brussels, Belgium, to a question about photographs published in the Los Angeles Times of soldiers posing with dead insurgents. (Associated Press)

Secretary of State Hillary Rodham Clinton and Canadian Foreign Minister John Baird hold the shirts each hopes the other will wear thanks to their bet over the winner of the New York Rangers-Ottawa Senators Stanley Cup playoff series. (Associated Press)

Foreign ministers from dozens of countries, including U.S. Secretary of State Hillary Rodham Clinton (center), gather in Istanbul on Sunday, April 1, 2012, to push for tighter sanctions and diplomatic pressure to further isolate Syrian President Bashar Assad. (AP Photo)

U.S. Secretary of State Hillary Rodham Clinton speaks with an Arab official as she arrives to join foreign ministers from dozens of countries gathered in Istanbul on Sunday, April 1, 2012, to set conditions for a new Syria. (AP Photo)

Turkish Prime Minister Recep Tayyip Erdogan (right) speaks with U.S. Secretary of State Hillary Rodham Clinton in Istanbul on Sunday, April 1, 2012. (AP Photo/Yasin Bulbul, Turkish Prime Minister's Press Service)

Secretary of State Hillary Rodham Clinton (right) extends her hand to Afghan Foreign Minister Zalmai Rassoul during a press briefing following their meeting at the State Department in Washington on Wednesday, March 21, 2012. (AP Photo/Cliff Owen)

Secretary of State Hillary Rodham Clinton addresses a news conference at United Nations headquarters on March 12, 2012. (Associated Press)

U.S. Secretary of State Hillary Rodham Clinton (center), accompanied by U.S. Ambassador to the United Nations Susan Rice and Russian Foreign Minister Sergei Lavrov, poses for photos at the beginning of their bilateral meeting at United Nations headquarters on March 12, 2012. (Associated Press)