A masked man in military fatigues brings a blindfolded Irma Krat, arrested and held by pro-Russian protestors before her meeting with journalists near of occupied police station in Slaviansk, Ukraine, 21 April 2014. Pro-Russian activists are demanding broader autonomy from Kiev and closer ties to Russia. Pro-Russian activists continued occupying government, police and other administrative buildings in eastern Ukrainian cities, in defiance of an ultimatum by the Ukrainian government to lay down their weapons. Russia, the United States, the European Union and Ukraine on 17 April had agreed on steps to de-escalate the crisis in Ukraine during talks in Geneva, Switzerland. (Photo by Roman Pilipey/EPA)

Oldtimer car owner Marek Schramm (2-R) stands next to his “FSO Warszawa” type “M20” car during a stop at the Heldenplatz (Heroes' Square) in downtown Vienna, Austria, 21 April 2014, en route to the canonization of late Pope John Paul II in Rome, Italy. According to the car's registration documents, the vehicle once was owned by Polish Cardinal Karol Wojtyla, who later became Pope John Paul II, registered under the licence plate number “KR 96 13” from 1958 to 1977. (Photo by Herbert Pfarrhofer/EPA)

Armed pro-Russian protestors sit at a checkpoint near Krasnyi Liman, in the Donetsk area, Ukraine, 24 April 2014. At least five people were killed on 24 April in clashes between government forces and pro-Russian separatists in eastern Ukraine, prompting a warning by Russian President Vladimir Putin to the country's Western-backed interim leader. The Ukrainian Interior Ministry said that up to five pro-Russian militants were killed as troops disbanded three checkpoints near the eastern town of Sloviansk. (Photo by Evgeniy Maloletka/EPA)

A Ukrainian security force officer is deployed at a checkpoint set on fire and left by pro-Russian separatists near Slaviansk April 24, 2014. Ukrainian forces clashed with pro-Russian militants as they closed in on the separatist-held city of Slaviansk on Thursday, seizing rebel checkpoints and setting up roadblocks as helicopters circled overhead. Reuters journalists saw a Ukrainian detachment with five armoured personnel carriers take over the checkpoint on a road north of the city in late morning after it was abandoned by separatists who set tyres alight to cover their retreat. (Photo by Gleb Garanich/Reuters)

A vendor waits for customers at his stall in Bogor, West Java, Indonesia Wednesday, April 23, 2014. (Photo by Tatan Syuflana/AP Photo)

Anti-government protesters use a slingshot to throw rocks at police while jumping to avoid gas canisters during a demonstration in which masked youths battled police and blocked a main highway in Caracas April 21, 2014. Anti-Maduro protests since early February have led to violence killing at least 41 people, according to official figures. The dead have been from both sides of the South American nation's political divide and from security forces. (Photo by Christian Veron/Reuters)

An Aboriginal woman performs for Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge at the National Indigenous Training Academy on April 22, 2014 in Ayers Rock, Australia. The Duke and Duchess of Cambridge are on a three-week tour of Australia and New Zealand, the first official trip overseas with their son, Prince George of Cambridge. (Photo by Scott Barbour/Getty Images)

A pair of bride and groom poses for photos in front of barricades set up outside a regional government building seized by pro-Russian armed men in Kramatorsk, eastern Ukraine April 22, 2014. An international agreement to avert wider conflict in Ukraine was faltering on Monday, with pro-Moscow separatist gunmen showing no sign of surrendering government buildings they have seized. (Photo by Baz Ratner/Reuters)

Family and friends mourn the death of 24-year-old Sasha, a pro-Russian activist, as his body rests in a casket outside the family's home in the small village of Aleksandrovka on April 22, 2014 near Slovyansk Ukraine. Sasha was killed during an Easter Sunday attack on a roadside checkpoint where he was working. Pro-Russian militants have been manning roadblocks around Slovyansk and have taken control of government buildings in the city. They are demanding independence from Ukraine. Other pro-Russian activists have been occupying government buildings in other eastern Ukraine cities in recent weeks making similar demands. (Photo by Scott Olson/Getty Images)

Shannon Briggs of USA, former world heavyweight champion, poses while clashing a press conference ahead of the upcoming heavyweight boxing title fight between Wladimir Klitschko of Ukraine and Alex Leapai of Australia at InterContinental Hotel on April 22, 2014 in Dusseldorf, Germany. (Photo by Lars Baron/Getty Images/Bongarts)

People dressed up as Imperial soldiers of Star Wars film distribute promotional manual to visitors during the 2014 Beijing International Automotive Exhibition at China International Exhibition Center on April 22, 2014 in Beijing, China. More than 2,000 automotive enterprises from 14 countries and regions participated in the 2014 Beijing International Automotive Exhibition from April 20 to April 29. (Photo by Feng Li/Getty Images)

Members of a Polish paratrooper unit watch as a U.S. Air Force plane ferrying men and equipment of the U.S. Army 173rd Airborne Brigade lands at a Polish air force base on April 23, 2014 in Swidwin, Poland. Approximately 150 U.S. troops, as well as another 450 destined for the three Baltic states in coming days, will participate in bilateral military exercises over the coming weeks in a sign of commitment among NATO members. Tensions are rising in eastern Ukraine between Russian separatists and Ukrainian authorities and NATO is seeking to reassure its own members located close to Russia. (Photo by Sean Gallup/Getty Images)

A model wears the mask as she showcases designs on the runway by China Academy of Art School of Design Graduates Show during the 2014 China Graduate Fashion Weekat the 751D-PARK Workshop on April 23, 2014 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

Police hold their weapons during clashes with residents of the Pavao-Pavaozinho slum during a protest following the funeral of dancer Douglas Rafael da Silva, who was shot and killed, on April 24, 2014 in Rio de Janeiro, Brazil. Da Silva's body was discovered in the pacified Pavao-Pavaozinho community, just blocks from Copacabana Beach, on April 22. Protests and shootings broke out as a result after protesters alleged he was killed by police in the pacified “favela”. (Photo by Mario Tama/Getty Images)

Young Indian Hindu Brahmins training to be priests perform yoga on a ghat on the Ganges River, holy to Hindus, at sunrise on April 23, 2014 in Varanasi, India. (Photo by Kevin Frayer/Getty Images)

Terezinha Guilhermina and guide Guilherme Santana of Brazil compete in the Women's 200m T11 final during day one of the Open Caixa Loterias 2014 Paralympics Athletics competition at Ibirapuera Sports Complex on April 24, 2014 in Sao Paulo, Brazil. (Photo by Jonne Roriz /Getty Images)

The avalanche that killed at least thirteen sherpas is pictured as it barrels down a mountain in the Mount Everest Region on April 18, 2014. Rescuers on Mount Everest April 19 found the body of a 13th Nepalese guide buried under snow as authorities ruled out hope of finding any more survivors from the deadliest accident ever on the world's highest peak. (Photo by Buddhabir Rai/AFP Photo)

A handout picture made available by the Nepal National News Agency (RSS) on 19 April 2014 shows Nepalese mountain rescue workers lifting an injured climber after an avalanche came down on Mt. Everest, in Nepal, 18 April 2014. Authorities called off the rescue operation for survivors after 12 Nepali climbing guides were killed in an avalanche on Mount Everest, as bad weather closed in. Seven climbers were rescued, including two airlifted to Kathmandu for treatment. The avalanche hit at a site known as the Khumbu icefall at more than 5,000 m altitude, as the climbers were ascending from the base camp to camp one. (Photo by Buddhabir Rai/EPA)

A technician uses a tool to cut parts off a Gepard antiaircraft cannon tank that once belonged to the Bundeswehr at the Battle Tank Dismantling GmbH Koch on April 23, 2014 in Edeleben, Germany. Since the early 1990s the company has dismantled over 15,000 tanks and other armoured vehicles, from German, Austrian, French and other European arsenals, as many nations reduce their military forces in accordance with the Conventional Armed Forces in Europe Treaty. (Photo by Jens Schlueter/Getty Images)

Ivorians bathe in a polluted body of water that flows through the Ebrie Lagoon in Abidjan on April 19, 2014. The level of pollution in the lagoon has increased in recent years due to the discharge of sewage from nearby urban areas. (Photo by Sia Kambou/AFP Photo)

A participant displays her outfit during the annual Easter Parade on Fifth Avenue in New York on April 20, 2014. The annual parade has been a New York tradition since the late 1880s, during which participants gather, donning all mode of spring finery and hat, from wacky to traditional. (Photo by Emmanuel Dunand/AFP Photo)

Guests leave after attending the Easter Matins at St George's Chapel in Windsor Castle, west of London, on April 20, 2014. Queen Elizabeth II will celebrate her 88th birthday Monday April 21, 2014. Traditionally the British sovereign celebrates on a second official birthday in June, because the summer weather is supposed to be better for open-air events. (Photo by Oli Scarff/AFP Photo)

A boy entertains bystanders with his bicycle during a procession at the yearly Lagos carnival to mark the Easter holiday on April 21, 2014. The carnival was held with processions combining some elements of a circus, grand display of fabulous costumes by the participants, and public street parties at various locations where the parade took place. (Photo by Pius Utomi Ekpei/AFP Photo)

A Syrian woman sits with her children on the sidewalk, in downtown Istanbul on April 22, 2014. The number of Syrian refugees in Turkey has reached “almost one million”, Prime Minister Recep Tayyip Erdogan has said, while pledging to keep accepting those fleeing the war. The three-year conflict in Syria has sent millions fleeing to neighbouring countries and beyond. (Photo by Bulent Kilic/AFP Photo)

An Indian supporter of Chief Minister of the Indian state of Gujarat and Bharatiya Janata Party (BJP) prime ministerial candidate Narendra Modi holds his daughter, dressed in a Bharatha Matha (Mother of India) costume, during an election rally for the BJP and allied parties in Hyderabad on April 22, 2014. India's 814-million-strong electorate is voting in the world's biggest election which is set to sweep the Hindu nationalist opposition to power at a time of lowgrowth, anger about corruption and warnings about religious unrest. (Photo by Noah Seelam/AFP Photo)

A pro-Russia activist holds a portrait of Stalin as he together with the others gather to prevent a planned campaigning visit of presidential candidate Yulia Tymoshenko to the eastern Ukrainian city of Donetsk on April 22, 2014. The visit was cancelled. (Photo by Anatolii Stepanov/AFP Photo)

A baby sleeps on a makeshift bed at a camp set up for Muslims waiting to be evacuated near the mosque of the PK 12 district of Bangui on April 22, 2014. The United Nations has evacuated almost 100 Muslims from the capital of the crisis-torn Central African Republic to “save their lives”, according to officials. Supported by staff from the UN's refugee agency, 93 Muslims were transported east from Bangui to the town of Bambari, according to El Hadj Abacar ben Ousmane, senior official in the town some 300 kilometres (185 miles) from the capital. (Photo by Issouf Sanogo/AFP Photo)

Paper yellow butterflies are thrown in the air at the entrance of the cathedral during a ceremony to honor late Nobel Prize laureate in Literature Gabriel Garcia Marquez in Bogota, on April 22, 2014. Colombia bids farewell Tuesday to its favorite son, Garcia Marquez, with a national tribute filled with the late Nobel winner's favorite music and roses. Garcia Marquez died in Mexico City on Thursday at age 87. (Photo by Luis Acosta/AFP Photo)

Insulation materials are blown off a building amid a strong sandstorm in Hami, northwest China's Xinjiang region on April 23, 2014. Meteorological authorities issued an “orange alert” for a sandstorm as visibility in certain areas dropped to less than 50 metres, local media reported. (Photo by AFP Photo/STR)

People cover their faces as strong winds blows insulation material off a building in Hami, northwest China's Xinjiang region on April 23, 2014. (Photo by AFP Photo/STR)

Double amputee Celeste Corcoran, center, a victim of last year's bombings, reaches the finish line of the 118th Boston Marathon, Monday, April 21, 2014, in Boston, with the aid her sister Carmen Acabbo, left, and daughter Sydney, right, who was also wounded last year. (Photo by Elise Amendola/AP Photo)

People collect free books offered by a publishing house on International Book Day in Bucharest, Romania on April 23, 2014. (Photo by Daniel Mihailescu/AFP Photo)

Railway workers do maintenance work on rail tracks on the hundred-year old Long Bien (former Paul Doumer) bridge in Hanoi on April 24, 2014. Built under French colonial rule in late 19th century the Vietnam's railways which have not seen much changes since are the most under-developped transport sector in Vietnam and often come under public criticism. (Photo by Hoang Dinh Nam/AFP Photo)

A Turkish flag partially covers the face of a Turksih soldier standing during the ceremony celebrating the 99th anniversary of the Anzac Day in Canakkale on April 24, 2014. A dawn ceremony on April 25 marks the time of the first landings of the Australian and New Zealand Army Corps (ANZAC) at the Gallipoli peninsula in the ill-fated Allied campaign to take the Dardanelles Strait from the Ottoman Empire. In the ensuing eight months of fighting, about 11,500 ANZAC troops were killed, fighting alongside British, Indian and French soldiers against losses Turks put down of some 86,000 soldiers. Every April, thousands of Australians and New Zealanders, many of them young backpackers, make the pilgrimage to the historic peninsula to commemorate the gruelling battle that was their first real test of World War One. (Photo by Bulent Kilic/AFP Photo)