Two U.S. soldiers walk past a group of Afghan men resting on top of a destroyed tank in the Panjshir Valley of Afghanistan in September 2005. David Guttenfelder/AP hide caption

itoggle caption David Guttenfelder/AP

Women in Kayseri, Turkey, hold national flags and posters at the funeral Thursday of Furkan Dogan, 19, the youngest of the nine activists killed in Monday's military takeover by Israeli forces of aid ships heading to the Gaza Strip. Anti-Israeli sentiment is high after the incident, and now threatens Israel's relations with Turkey, its only ally in the region. Burhan Ozbilici/AP hide caption

itoggle caption Burhan Ozbilici/AP

Mexican President Felipe Calderon addresses a joint meeting of the U.S. Congress on Thursday. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images

President Obama walks with Afghan President Hamid Karzai at the presidential palace in Kabul on March 28. In recent comments, Karzai has blamed the West for many of his troubles, causing concern in Washington. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Secretary of State Hillary Clinton addresses the American Israel Public Affairs Committee (AIPAC) policy conference in Washington on Monday. She reiterated U.S. support for Israel but also repeated criticism of Israel's announced plans to build more homes in east Jerusalem, an area that the Palestinians hope will be part of a new Palestinian state. Cliff Owen/AP hide caption

itoggle caption Cliff Owen/AP

Israeli police detain a left-wing Israeli activist during a protest Friday in the East Jerusalem neighborhood of Sheikh Jarrah against Israeli settlements and occupation. The protest came after Israel announced controversial plans to build new homes for Jews. Alessio Romenzi/AFP/Getty Images hide caption

itoggle caption Alessio Romenzi/AFP/Getty Images

Afghan National Police Col. Shafiqa Quraishi addresses the crowd during the International Women's Day ceremony at the Interior Ministry in Kabul on March 4. Staff Sgt. Larry E. Reid Jr./U.S. Air Force photo courtesy of isafmedia via Flickr hide caption

itoggle caption Staff Sgt. Larry E. Reid Jr./U.S. Air Force photo courtesy of isafmedia via Flickr

U.S. Secretary of State Hillary Clinton and British Foreign Secretary David Miliband (shown here Jan. 21 in Washington, D.C.) will be among the officials meeting in London this week to discuss Afghanistan and Yemen. Joshua Roberts/Getty Images hide caption

itoggle caption Joshua Roberts/Getty Images

Haiti's President Rene Preval answers questions from the press as Secretary of State Hillary Clinton looks on in Port-au-Prince on Saturday. Preval and Clinton met to discuss the state of emergency after last week's deadly earthquake. Julie Jacobson/AP hide caption

itoggle caption Julie Jacobson/AP

President Obama speaks from the Rose Garden as George W. Bush and Bill Clinton look on. Obama asked the former presidents to help with U.S. relief efforts in Haiti after the earthquake. Alex Brandon/AP hide caption

itoggle caption Alex Brandon/AP

Secretary of State Hillary Clinton listens to remarks by Jordanian Foreign Minister Nasser Judeh after their meeting Friday at the State Department. Tim Sloan/AFP/Getty Images hide caption

itoggle caption Tim Sloan/AFP/Getty Images