Yomiuri Shimbun/AP PhotoIn this March 22, 2011 file photo, a boat sits atop a building in Otsuchi, Iwate Prefecture, Japan, following the March 11 earthquake and tsunami which devastated a vast area of northeastern Pacific coast of Japan.
Kevin Frayer/AP PhotoIn this May 15, 2011 file photo, U.S. Army flight medic SGT Jaime Adame, top, cares for seriously wounded Marine CPL. Andrew Smith following an insurgent attack on board a medevac helicopter from the US Army's Task Force Lift "Dust Off", Charlie Company 1-214 Aviation Regiment north of Sangin, in the volatile Helmand Province of southern Afghanistan.
Matt Dunham/AP PhotoIn this April 29, 2011 file photo, Britain's Prince William kisses his wife Kate, Duchess of Cambridge, as bridesmaid Grace van Cutsem, left, covers her ears on the balcony of Buckingham Palace after the Royal Wedding in London.
Altaf Qadri/AP PhotoIn this Nov. 3, 2011 file photo, a man lifts an elderly woman after she deboarded a passenger bus on a flooded street in Bangkok, Thailand. Thailand's worst floods in more than half a century continued to creep into Bangkok.
Emilio Morenatti/AP PhotoIn this July 24, 2011 file photo, women react in Oslo at the end of a memorial service at Oslo Cathedral in the aftermath of the attacks on Norway's government headquarters and a youth retreat.
Scanpix, Morten Holm/AP PhotoIn this July 22, 2011 file photo, an injured woman is assisted from a damaged building in Oslo, after an explosion rocked the capital.
Petros Giannakouris/AP PhotoIn this June 29, 2011 file photo, a Greek Orthodox priest drives his buggy next to riot police during clashes in central Athens.
Dimitri Messinis/AP PhotoIn this Feb. 23, 2011 file photo, a motorcycle policeman burns as his colleague, left, tries to help him after protesters threw a petrol bomb in Athens. Scores of youths hurled rocks and petrol bombs at riot police after clashes broke out during a mass rally taking place as part of a general strike.
Mainichi Shimbun, Tomohiko Kano/AP PhotoIn this March 11, 2011 file photo, a tsunami floods over the breakwater protecting the coastal city of Miyako at Heigawa estuary area after northeastern Japan was hit by a powerful earthquake.
Ben Curtis/AP PhotoIn this Feb. 2, 2011 file photo, pro-government demonstrators, below, clash with anti-government demonstrators, above, as an Egyptian Army soldier on the rooftop of the Egyptian Museum observes the scene in Tahrir square, the center of anti-government demonstrations, in Cairo, Egypt.
Wally Santana/AP PhotoIn this March 24, 2011 file photo, a young evacuee is screened at a shelter for leaked radiation from the damaged Fukushima nuclear plant in Fukushima, Fukushima prefecture, Japan.
Ben Curtis/AP PhotoIn this Jan. 28, 2011 file photo, Egyptian anti-government activists clash with riot police in Cairo, Egypt. Tens of thousands of anti-government protesters poured into the streets of Egypt stoning and confronting police who fired back with rubber bullets and tear gas in the most violent and chaotic scenes yet in the challenge to President Hosni Mubarak's 30-year rule.
Emilio Morenatti/AP PhotoIn this Feb. 9, 2011 file photo, Anti-government protestors hold candles as they walk surrounding an Egyptian Army tank at Tahrir square in Cairo, Egypt.
Michael Probst/AP PhotoIn this Nov. 3, 2011 file photo, activists of the Occupy Frankfurt movement have set up a fire near the Euro sculpture in front of the European Central Bank in Frankfurt, Germany.
Gregorio Borgia/AP PhotoIn this Oct. 15, 2011 file photo, a protestor hurls a canister during clashes in Rome. Protesters smashed the windows of shops in Rome and torched a car as violence broke out during a demonstration in the Italian capital, part of worldwide protests against corporate greed and austerity measures.
Kyodo News/AP PhotoIn this March 11, 2011 file photo, earthquake-triggered tsumanis sweep shores along Iwanuma in northern. The magnitude 8.9 earthquake slammed Japan's eastern coast, unleashing a 13-foot (4-meter) tsunami that swept boats, cars, buildings and tons of debris miles inland.