Midshipmen look to the sky as the U.S. Navy Blue Angels perform a fly-over to begin the graduation and commencement ceremony for the U.S. Naval Academy Class of 2015 in Annapolis, Maryland, May 22, 2015.

Kashmiri Muslims pray at the Hazratbal Shrine on the outskirts of Srinagar, Indina, May 22, 2015. Muslim devotees flocked to the Hazratbal Shrine following the Muslim festival of Mehraj-u-Alam, believed to mark the ascension of the Prophet Mohammad to Heaven.

A woman walks past a mural of two hearts painted in rainbow colors in Dublin, May 22, 2015. Polling stations across Ireland have opened for the referendum on same-sex marriage, the first time a nationwide vote has been held on the issue. People may vote Yes or No to an amendment to the constitution which states, 'Marriage may be contracted in accordance with law by two persons without distinction as to their sex.'

USA's Jordan Burroughs, left, and Cuba's Luis Esteban Quintana Martinez compete in the men's freestyle wrestling class during 'Salsa in the Square matches' between the USA Wrestling and Cuban National Team in support of 'Beat The Streets' in Times Square, New York, May 21, 2015.

A member of the Third U.S. Infantry Regiment (The Old Guard) takes part in a "Flags-In" ceremony ahead of Memorial Day, at Arlington National Cemetery in Washington, May 21, 2015.

A soldier walks on a path through the Massachusetts Military Heroes Fund flag garden on Boston Common, ahead of Memorial Day, May 21 2015, in Boston. Each of the approximately 37,000 flags represents a Massachusetts military member who died in service from the Revolutionary War to the present.

A Burundian protester throws a rock at police officers in front of a burning barricade during an anti-government demonstration in Bujumbura, Burundi, May 21, 2015. According to the United Nations' refugee agency, more than 105,000 Burndians have fled the country to seek refuge in neighboring countries such as Rwanda, DR Congo, and Tanzania.

Graduate Robert McConnel asks U.S. President Barack Obama to strike a "James Bond" pose during the 134th Commencement Exercises of the United States Coast Guard Academy in New London, Connecticut, May 20, 2015.

Uruguayans display pictures of their relatives who "disappeared" during a military regime from 1973-1985, at an annual demonstration in Montevideo, Uruguay, May 20, 2015. Thousands of Uruguayans marched along 18 de Julio, the main avenue of the city, demanding to know about the 150 missing Uruguayans that they said were kidnapped by military forces.

Two giraffes nibble on dry grass from a basket hanging at a few meters height in their enclosure at the zoo in Berlin, May 21, 2015.

Mounted riot police clash with squatters during a land eviction in Lima, Peru, May 19, 2015. Hundreds of people squatted on land that is an archaeological site, according to the Ministry of Culture.

Storm clouds gather during the LV County Championship match between Nottinghamshire and Somerset at Trent Bridge, May 19, 2015, in Nottingham, England.

Delegates attend the opening session of the ninth meeting of the National Assembly's 13 tenure, May 20, 2015, at the National Assembly Office in Hanoi, Vietnam.

Border soldiers participate in drills in the desert, May 18, 2015 in Alxa, China.

Police academy graduates march during their graduation ceremony in Islamabad, May 18, 2015. Out of the 408 graduating officers, 76 female officers were inducted into the Pakistan police force.

Indonesian men dressed as "stormtroopers" from the movie "Star Wars" take a break between performances during a promotional event at a shopping mall in Jakarta, Indonesia, May 19, 2015.

A Rohingya boy holds his ball as he walks to a shelter in Kuala Langsa, Indonesia, May 19, 2015. United Nations agencies urged Indonesia, Malaysia and Thailand to step up sea rescue operations and stop preventing thousands of desperate migrants from reaching land.

The Villarrica Volcano is seen partially covered by clouds at Pucon, Chile, May 18, 2015.

The south end of a partial rainbow seems to touch down on the hills behind the wind turbines southwest of Walla Walla, Wash., May 18, 2015.

Residents cross over an improvised bridge after a landslide sent mud and water crashing into homes close to the municipality of Salgar, Colombia, May 19, 2015. The landslide in Colombia's northwest mountains killed more than 50 people and injured dozens of others, according to local authorities.

Courtney Conlogue, of the US, surfs during the final of the World Surf League (WSL) Rio Pro championship in Rio de Janeiro, May 17, 2015. Conlogue defeated South Africa's Bianca Buitendag to win the championship.

A Rohingya migrant, who arrived in Indonesia by boat, eats his breakfast inside a temporary compound for refugees at Kuala Cangkoi village in Lhoksukon, Indonesia, May 17, 2015.

President Barack Obama walks across the tarmac towards the Marine One helicopter at Philadelphia International Airport, May 18, 2015, in Philadelphia. Obama is traveling to nearby Camden, NJ, to announce that he is prohibiting the federal government from providing military-style equipment to local departments and putting stricter controls on other weapons and gear distributed to law enforcement.

A bishop photographs Pope Francis as he delivers his speech during the opening session of a Italian Episcopal Conference meeting, at the Vatican, May 18, 2015.

People dressed as superheros relax after finishing a 5 km. race to raise funds for the hemato-oncology ward of the "La Mascota" children's hospital in Managua, Nicaragua, May 17, 2015.

Ethnic Rohingya men take a nap on a pile of clothes donated by local residents at a temporary shelter in Langsa, Indonesia, May 17, 2015. Boatloads of more than 2,000 migrants, many of them ethnic Rohingya Muslims fleeing persecution in Myanmar and Bangladesh and trying to escape poverty, have landed in Indonesia, Malaysia and Thailand in recent weeks. Aid groups estimate that thousands more are stranded at sea after a crackdown on human traffickers prompted captains and smugglers to abandon their human cargo.