Photos

A Palestinian man stands in the rubble of a house after it was hit by an Israeli missile strike in Gaza City, Friday, July 18, 2014. Israel intensified its 11-day campaign against Hamas by sending in tanks and troops late Thursday after becoming increasingly exasperated with unrelenting rocket fire from Gaza on its cities, especially following Hamas' rejection of an Egyptian cease-fire plan earlier in the week.(AP Photo/Hatem Moussa)

In this undated Calehr family hand out photo Samira Calehr, left, poses with her son, Shaka Panduwinata. Shaka Panduwinata and his brother, Miguel Panduwinata, were killed aboard Malaysia Airlines Flight 17, which was shot down over Ukraine. (AP Photo/Calehr family, HO) EDITORIAL USE ONLY

In this July 11, 2014, photo, Cuban students exit Marta Abreu Central University in Santa Clara, Cuba. Beginning as early as October 2009, a project overseen by the U.S. Agency for International Development sent Venezuelan, Costa Rican and Peruvian nationals to Cuba to cultivate a new generation of political activists. Often posing as tourists, the young travelers befriended Cuban students. Fernando Murillo, contracted to turn politically apathetic young Cubans into ìchange agents,î headed to Santa Clara and connected with a cultural group that called itself ìRevolution,î a modest outfit of street artists devoted to electronic music and video. (AP Photo/Franklin Reyes)

Sally Buzbee, the newly-named chief of the AP's Washington bureau, works on developing stories after the midterm elections that will change the political landscape in the nation's capital, Wednesday, Nov. 10, 2010, in Washington. (AP Photo/J. Scott Applewhite)

From top left, AP photographers Rodrigo Abd, Manu Brabo, Narciso Contreras. Bottom row from left Khalil Hamra and Muhammed Muheisen.

President Barack Obama poses with retiring AP photographer Ron Edmonds, his wife, Grace, and daughter, Ashley, in the Oval Office of the White House in Washington, Thursday, July 30, 2009. (Photo courtesy the White House, Lawrence Jackson)

The Associated Press 2013 Pulitzer Prize-winning team, whose coverage of the Syrian civil won the prize for Breaking News Photography, poses together after the awards ceremony in Columbia University's Low Library, in New York, Thursday, May 30, 2013. From left are: Pakistan chief photographer Muhammed Muheisen, Manu Brabo of Spain, Narciso Contreras of Mexico, Rodrigo Abd of Guatemala and Gaza-based Khalil Hamra. (AP Photo/Richard Drew)