The Louis S. St Laurent icebreaker slices its way through the ice of the Northwest Passage. Jackie Northam/NPR hide caption

itoggle caption Jackie Northam/NPR

A model of a surveillance drone by the French Dassault Aviation and the British BAE Systems is on display at the International Paris Air Show in June. Pierre Verdy/AFP/Getty Images hide caption

itoggle caption Pierre Verdy/AFP/Getty Images

A local resident walks Wednesday near Osama bin Laden's compound in Abbottabad, Pakistan. The U.S. raid that killed bin Laden has been a source of tension in U.S.-Pakistani relations. Aqeel Ahmed/AP hide caption

itoggle caption Aqeel Ahmed/AP

Yemeni army soldiers, lifted by anti-government protesters, chant slogans and hold up their rifles as they celebrate President Ali Abdullah Saleh's departure to Saudi Arabia, in Sanaa, Yemen, on Sunday. Hani Mohammed/AP hide caption

itoggle caption Hani Mohammed/AP