A visitor stands in the exhibition “I Am A Drop In The Ocean” dedicated to the artistic and visual expressions of the protests that shook the Ukraine from November 2013 until February 2014 at the Kuenstlerhaus gallery in Vienna, Austria, Thursday, April 10, 2014. The exhibition opens its doors from April 11 until May 23, 2014. (Photo by Ronald Zak/AP Photo)

Jose Luis Hernandez, a handicapped Honduran immigrant, plays with a ball in the Nazaret shelter in Mexico City on April 9, 2014. The Mexican government granted humanitarian visas to a group of 15 Honduran immigrants – all victims of accidents whilst traveling in “La Bestia” train heading to the Unitd States – and who are now in Mexico attempting to have an interview with Mexican President Enrique Pena Nieto to tell him about the illegal immigrants problems. (Photo by Alfredo Estrella/AFP Photo)

A riot policeman hugs an activist who gave him a rose during the National Day of Remembrance and Solidarity with Victims of the Armed Conflict, in Bogota, Colombia on April 9, 2014. In Colombia, the armed conflict which involved leftist guerrillas, right-wing paramilitaries, military and drug gangs has left 6 million affected, of which at least 5 million are displaced according to the most recent UN human rights report. (Photo by Guillermo Legaria/AFP Photo)

Gulf air hostesses leave the track after a presentation of Formula One drivers' prior to the start of the Formula One Bahrain Grand Prix at Sakhir circuit in Manama on April 6, 2014. Mercedes driver Nico Rosberg of Germany took pole position for the Bahrain Grand Prix with teammate Lewis Hamilton ensuring a Mercedes lockout of the front row. (Photo by Marwan Naamani/AFP Photo)

A U.S. army's OH-58D Kiowa Warrior helicopter takes part in a U.S.-South Korea joint live-fire military exercise at a training field in Pocheon, south of the demilitarized zone separating the two Koreas, April 11, 2014. The drill is part of Foal Eagle, an annual military training between U.S. and South Korea that runs from February 24 to April 18. (Photo by Kim Hong-Ji/Reuters)

A pro-Russian demonstrator dressed in a Soviet military uniform waves and shouts slogans as he takes part in a rally in the southern Ukrainian city of Odessa on April 10, 2014. Russian President Vladimir Putin threatened on April 10 to cut off Ukraine's gas unless Europe drummed up the cash to help cover its debts in an intensifying standoff over the splintered ex-Soviet state. (Photo by Alexey Kravtsov/AFP Photo)

Antonio Fiorillo performs with his dough during the acrobatic pizza event, part of the Pizza World Championships, in Parma, northern Italy, Wednesday, April 9, 2014. (Photo by Marco Vasini/AP Photo)

Russia's President Vladimir Putin (L) listens to explanations and looks at an exhibit as he visits the Cosmonautics Memorial Museum in Moscow, Russia, 11 April 2014. On Saturday, Russia celebrates Cosmonautics day which marks Yuri Gagarin’s pioneering flight into space. (Photo by Sergei Karpukhin/EPA)

In this April 9, 2014 photo provided by the Australian Defense Force, a Royal Australian Air Force AP-3C Orion flies past Australian Defense vessel Ocean Shield on a mission to drop sonar buoys to assist in the acoustic search of the missing Malaysia Airlines Flight 370 in the southern Indian Ocean. The ship searching for the missing Malaysian jet has detected two more underwater signals that may be emanating from the aircraft's black boxes, and the Australian official in charge of the search expressed hope Wednesday that the plane's wreckage will soon be found. (Photo by LSIS Bradley Darvill/AP Photo/Australian Defense Force)

Alex Plunkett, left, and Sean Hart, both of Arlington, participate in International Pillow Fight Day on the Washington Monument grounds in the District, on April 6, 2014. (Photo by Marvin Joseph/The Washington Post)

A South Korean soldier from 26th Infantry division attends the United States and South Korean Joint live fire Exercise at Rodriguez Range on April 11, 2014 in Pocheon, South Korea. (Photo by Chung Sung-Jun/Getty Images)

Living amongst old and wrecked airplanes, an internally displaced woman carries her child in a camp for internally displaced people at Bangui International Airport, Central African Republic, on April 10, 2014. (Photo by Goran Tomasevic/Reuters)

Students take notes during an English language class at the Juba Nabari Primary School, in Juba on April 9, 2014. Recent conflict in the country has made resources scarce, many civil servants, including teachers, have not received their pay for several months. (Photo by Andrei Pungovschi/AFP Photo)

Undated handout photo issued by MCE Public Relations of “A Red Army” vodka gift set with the main bottle modeled on a Kalashnikov rifle (front) which has been found by regulators to be inappropriate. It suggested an association with violent and dangerous behaviour, the body which oversees the UK code of conduct said. Duncan McCausland, chair of the Independent Complaints Panel (ICP) which oversees responsible retailing in Northern Ireland, said there was no place for this sort of irresponsible marketing of alcohol. (Photo by MCE Public Relations/PA Wire)

Singer Miley Cyrus performs at the Barclays Center on Saturday, April 5, 2014 in New York. (Photo by Evan Agostini/AP Photo/Invision)

A consumer passes by Ukrainians laying on a store's floor as dead bodies in a flash mob action protesting against buying of the Russian goods in Kiev, Ukraine, Saturday, April 5, 2014. Following Russia's annexation of Ukraine's Crimean peninsula, the diplomatic strain between Ukraine and Russia is now turning into a trade war. (Photo by Efrem Lukatsky/AP Photo)

The tractor trailer carrying Seward Johnson's sculpture “Forever Marilyn” featuring Marilyn Monroe, parks near PPG Plaza during a stopover on Monday, April 7, 2014, in downtown Pittsburgh. The stopover was the tenth and final on the trip from Palm Springs, Calif., to New Jersey. (Photo by Keith Srakocic/AP Photo)

Police carry away a young protester after they intervened at the former temporary refugee camp at Oranienplatz in Berlin, Germany, on April 8, 2014. Several hundred riot police sealed off the square after, according to an eyewitness, violence broke out between refugees who had accepted a deal by the city to leave the camp and a small number who insisted on staying. Refugees, many of them from Africa who came to Germany via Lampedusa, began dismantling their shelters after agreeing to move to a renovated hostel. (Photo by Sean Gallup/Getty Images)

Highway Patrol officers investigate tire skid marks after several children were injured after being struck by a vehicle at a KinderCare Learning Center in Winter Park, Florida April 9, 2014. One child died and a dozen people were injured in a hit-and-run crash at an Orlando-area day care center on Wednesday afternoon, according to media reports citing hospital officials. (Photo by Stephen M. Dowell/Reuters/Orlando Sentinel)

A Palestinian farmer looks at Israeli army soldiers after he planted an olive trees near the West Bank town of Tubas in the Jordan valley, during a protest against the closure of land to Palestinians by the army and Jewish settlers, Tuesday, April 8, 2014. Dozens of Palestinians protested in the Jordan valley where Palestinian sources said that Israel has closed land for the army to use for the military training. (Photo by Mohammed Ballas/AP Photo)

Armed men in masks, representing Ukrainian special forces, stand guard outside the regional administration building in Kharkiv, April 8, 2014. Ukraine has launched an “anti-terrorist” operation in the eastern city of Kharkiv and about 70 “separatists” have been arrested for seizing the regional administration building, Ukrainian Interior Minister Arsen Avakov said on Tuesday. (Photo by Olga Ivashchenko/Reuters)

A wailing and distraught Rwandan woman, one of dozens overcome by grief at recalling the horror of the genocide, is carried away to receive help during a public ceremony to mark the 20th anniversary of the Rwandan genocide, at Amahoro stadium in Kigali, Rwanda Monday, April 7, 2014. Sorrowful wails and uncontrollable sobs resounded Monday as thousands of Rwandans packed the country's main sports stadium to mark the 20th anniversary of the beginning of a devastating 100-day genocide. (Photo by Ben Curtis/AP Photo)

Soldiers of the Presidential Regiment march during the Change of Guard ceremony at the Tomb of the Unknown Soldier in Moscow, on April 9, 2014. (Photo by Kirill Kudryavtsev/AFP Photo)

Members of the national police arrest a man during a protest against Venenzuelan President Nicolas Maduro in Caracas on April 6, 2014. The Government of Venezuelan President Nicolas Maduro on Sunday rejected the statements of Spanish Foreign Minister Jose Manuel Garcia-Margallo, who said that “the climate of reconciliation has been broken” in Venezuela as the wave of opposition protests continues in the South American country. (Photo by Carlos Becerra/AFP Photo)

A model poses during rehearsal ahead of the Lan Yu show at Mercedes-Benz Fashion Week Australia 2014 in Sydney, on April 9, 2014. (Photo by Lisa Maree Williams/Getty Images)

Alex Hribal, the suspect in the multiple stabbings at Franklin Regional High School, is escorted by police to a district magistrate to be arraigned in Export, Pa., on April 9, 2014. Authorities say Hribal has been charged after allegedly stabbing and slashing at least 19 people including students in the crowded halls of his suburban Pittsburgh high school. (Photo by Keith Srakocic/Associated Press)

A worker moves down a suspension cable as the West Virginia Division of Highways conducts an inspection of the 31st Street Bridge, Tuesday, April 8, 2014, in Huntington, W.Va. (Photo by Sholten Singer/AP Photo/The Herald-Dispatch)

A picture shows the transport container of the giraffe of Paris' Vincennes zoo, displayed on the Trocadero Esplanade near the Eiffel Tower in Paris on April 7, 2014, to announce the re-opening of the zoo on April 12 after several years of renovation. (Photo by Bertrand Guay/AFP Photo)

Afghan shoppers look for brooms at a roadside shop in Herat on April 9, 2014. Leading candidates in Afghanistan's presidential election voiced concern that voting was tainted by fraud after millions defied Taliban threats and turned out to choose a successor to President Hamid Karzai. World leaders praised the courage of Afghan voters, who cast their ballots in force despite bad weather and the violent campaign of intimidation, and urged patience in the long vote count. (Photo by Aref Karimi/AFP Photo)

Men rescue a boy from under the rubble after what activists said was explosive barrels dropped by forces loyal to Syria's President Bashar Al-Assad in Al-Shaar neighbourhood of Aleppo, on April 7, 2014. (Photo by Hosam Katan/Reuters)

A displaced young girl sits on a makeshift bed in front of burnt houses in Khor Abeche, 83 km northeast on Nyala (South Darfur), on April 6, 2014. Nearly 3000 people from Khor Abeche region in South Darfur leave their home and struggle to survive near the camp of United Nations Mission in Darfur (UNAMID) in Sudan. They are attacked by armed group on March 22 and they wait to be transfered to more safer region, Buzzer. (Photo by Albert Gonzalez Farran/AFP Photo)