A Palestinian sets fire to a tyre during clashes between hundreds of Palestinians and Israeli soldiers outside the Ofer prison after a march marking the 65th Nakba day or “Day of Catastrophe” in Betunia near the West Bank city of Ramallah, on May 15, 2013. (Photo by Abbas Momani/AFP Photo)

A mentally ill patient chained to a wall at the Mia Ali Baba holy shrine in the village of Samar Khel on the outskirts of Jalalabad, on May 16, 2013. At the Mia Ali Baba sanctuary the patients, presumed to be possessed by jinns (demons), are chained by the wrist inside, or in the open air to a tree, for 40 days. (Photo by Noorullah Shirzada/AFP Photo)

A bare-breasted FEMEN protester, with an inscription on her body that reads: “Life In Plastic Is Not Fantastic”, holds up a burning cross with a Barbie doll attached to it outside the Barbie Dreamhouse Experience in Berlin, on May 16, 2013. (Photo by Sean Gallup/Getty Images)

Visitors walk on a 40-meter-high spiral tower in the forest of Prora on the Baltic Sea island of Ruegen, Germany, on May 14, 2013. The tower is part of a new 1.25 kilometer Baumwipfelpfad (treetop trail) through the mixed forest of the region. The project, built around a new natural heritage center, is scheduled to be finished at the end of May. (Photo by Jens Buettner/DPA/AFP Photo)

Buddhists carry a giant lantern in a parade through the streets of Seoul, South Korea, during the Lotus Lantern Festival to celebrate the upcoming birthday of Buddha, on May 12, 2013. (Photo by Ahn Young-joon/Associated Press)

A man in China hired three people to destroy his Maserati – worth almost half a million dollars – because he was angry with the car dealer last Tuesday, May 14, 2013. The owner, identified only as Wang, paid the men to trash his $423,000 Maserati Quattroporte, worth N66.8million naira at the Qingdao International Auto Show. According to Car News China, Wang claimed the dealer had replaced faulty parts in his vehicle with used parts; he also accused both the dealer and an insurance company of fraud. (Photo by Reuters/Stringer)

A woman crosses stepping-stones underneath lotus lanterns, which have been hung up in preparation for the upcoming of birthday of Buddha, along the Cheonggye stream in central Seoul May 14, 2013. Buddha's birthday falls on May 17 in South Korea. (Photo by Kim Hong-Ji/Reuters)

A barge moves into position as workers prepare to remove the Star Jet rollercoaster, on May 14, 2013, that has been in the ocean for six months after the Casino Pier it was built on collapsed when superstorm Sandy hit Seaside Heights, New Jersey. (Photo by Lucas Jackson/Reuters)

A journalist (R) records a video on a raft as a man paddles along flooded street after heavy downpours hit Jianghua Yao Autonomous County, Hunan province, on May 16, 2013. (Photo by Reuters/Stringer)

U.S. President Barack Obama checks to see if he still needs the umbrella held by a U.S. Marine to protect him from the rain during a joint news conference with Turkish Prime Minister Recep Tayyip Erdogan in the Rose Garden of the White House in Washington, May 16, 2013. (Photo by Jason Reed/Reuters)

A woman poses with a wax figure of David Beckham at Madame Tussauds Wax Museum in Bangkok May 17, 2013. England's best known footballer David Beckham announced his retirement on Thursday after a career laden with trophies and glamour that had a worldwide impact that went way beyond soccer. (Photo by Chaiwat Subprasom/Reuters)

Muslim devotees raise their hands to receive sweets as offerings after prayers inside the shrine of Muslim saint Shah-e-Alam, during Urs in the western Indian city of Ahmedabad May 17, 2013. Urs is an annual festival held for over six days, commemorating the death anniversary of Sufi saint Khwaja Moinuddin Chishti at Ajmer in the desert Indian state of Rajasthan. The anniversary is celebrated in the seventh month of the Islamic lunar calendar. (Photo by Amit Dave/Reuters)

Kangaroo Kids quad motor bikes pictured on the second day of the 2013 Balmoral Show in partnership with Ulster Bank at the new site, Balmoral Park, UK, on May 16, 2013. (Photo by Stephen Hamilton/Presseye)

People line up to collect water at Yazarthingyan lake in Dala township, near Yangon May 12, 2013. Dala township is located near the sea and the only source of freshwater is from the inland lakes which have all dried up, with the exception of Yazarthingyan lake. According to the local authorities, the lake is only opened to locals once every three days, with over 1,000 people lining up to collect water when the authorities opened the lake from 4 pm to 5 pm. (Photo by Soe Zeya Tun/Reuters)

A fela dancer, accompanying Nigerian musician Tony Allen's band with its Afro-beat rhythms, performs during their set on stage at the St Lucia Jazz and Arts Festival at Pigeon Island National Landmark May 11, 2013. (Photo by Andrea De Silva/Reuters)

An Afghan boy flies his kite on a hill overlooking Kabul, Afghanistan, May 13, 2013. Banned during the Taliban regime, kite flying is once again the main recreational escape for Afghan boys and some men. (Photo by Anja Niedringhaus/AP Photo)

A deflated Rubber Duck by Dutch conceptual artist Florentijn Hofman floats on Hong Kong's Victoria Harbour, with the island skyline looming at the background, May 14, 2013. The 16.5-meter-high inflatable sculpture, which made its first public appearance in the territory on May 2, will be shown at the Ocean Terminal for a month. The Rubber Duck was deflated after some of its parts broke. (Photo by Tyrone Siu/Reuters)

Workers pull as they work to remove a high voltage underground electrical cable on side of a road in Mumbai May 17, 2013. (Photo by Danish Siddiqui/Reuters)

Visitors gather in the new “Rain Room” installation at the Museum of Modern Art (MoMA) in Manhattan, on May 15, 2013. The 5,000 square-foot installation creates a field of falling water that stops in the area where people walk through, allowing them to remain dry. The piece, created by Random International, releases a 260-gallon per minute shower around visitors. (Photo by Mario Tama/Getty Images)

A woman in vampire make-up attends the traditional park picnic on the first day of the annual Wave-Gotik Treffen, or Wave and Goth Festival, in Leipzig, Germany, on May 17, 2013. The four-day festival, in which elaborate fashion is a must, brings together over 20,000 Wave, Goth and steam punk enthusiasts from all over the world for concerts, readings, films, a Middle Ages market and workshops. (Photo by Marco Prosch/Getty Images)

Police arrest an ultra-Orthodox demonstrator in Jerusalem, on May 16, 2013. Tens of Thousands of ultra-Orthodox Israelis have clashed with police after gathering to protest against newly proposed government legislation that would see them drafted into the military. (Photo by Uriel Sinai/Getty Images)

A cloud of ash belches out of Mexico’s Popocatepetl volcano, some 55 km from Mexico City, as seen from Cholula, in the Mexican central state of Puebla, on May 15, 2013. The volcano spewed a new column of ash late Tuesday, with some of the material falling on three towns while glowing rocks landed on the towering mountain’s slope. Authorities have raised the alert level to “Yellow Phase Three”, the fifth of a seven-stage warning system, restricting access to an area of 12 km around the volcano while preparing evacuation routes and shelters. (Photo by Arturo Andrade/Getty Images)

In a photo released today, Expedition 35 Flight Engineer Chris Cassidy completes a spacewalk at 2:14 p.m. EDT May 11, to inspect and replace a pump controller box on the International Space Station's far port truss leaking ammonia coolant. (Photo by NASA/MCT)

A U.S. soldier arrives at the scene where a suicide car bomber attacked a NATO convoy in Kabul, Afghanistan, on May 16, 2013. A Muslim militant group, Hizb-e-Islami, claimed responsibility for the early morning attack, killing many in the explosion, police and hospital officials said. The powerful explosion rattled buildings on the other side of Kabul and sent a pillar of white smoke into the sky. (Photo by Anja Niedringhaus/Associated Press)

Chinese military officers use a piece of rope to line up honor guards as they prepare for a welcome ceremony for Greece's Prime Minister Antonis Samaras at the Great Hall of the People in Beijing, on May 16, 2013. (Photo by Andy Wong/Associated Press)

Demonstrators hold images of Argentine born Cuban revolutionary hero Ernesto “Che” Guevara during a protest in La Paz, Bolivia, on May 16, 2013. The Bolivian Workers Central union began an indefinite strike demanding that President Evo Morales' government improve the pension law. (Photo by Juan Karita/Associated Press)

A volunteer walks along the Bay of Bengal coast to evacuate people in Chittagong, Bangladesh, on May 16, 2013. Cyclone Mahasen struck the southern coast of Bangladesh on Thursday, lashing remote fishing villages with heavy rain and fierce winds that flattened mud and straw huts and forced the evacuation of more than 1 million people. (Photo by A. M. Ahad/Associated Press)

Puffs of clouds drift over a group of Allium blooms in Salina, Kansas, on May 16, 2013. (Photo by Tom Dorsey/The Salina Journal)

Representatives of the Union of the Municipality of Salvador Servers (Sindseps) protest in the district of Barris, central Salvador, on May 14, 2013. Municipal employees remain on strike indefinitely. (Photo by Ulisses Dumas/BAPress/Estadão Conteúdo)

An Indian Hindu devotee falls on burning coals while holding her daughter during a coal run at the Maa Maariamma Mela in Jalandhar, India. The devotees run on fire after fasting for seven days to prove their devotion. The mother and daughter were both injured. (Photo by Shammi Mehra/AFP Photo)

A giant QR code is seen near a housing construction site, owned by Chinese developer Vanke in Hefei in central China's Anhui province, on May 17, 2013. The 6,400-square-meter QR code, made with marbles and lawn, can be scanned from the air by mobile phone and takes visitors to a website that's intended to attract home buyers to the housing project, according to local media. (Photo by Associated Press)

Fireworks explode on the bun tower after the Bun Scrambling contest, on May 18, 2013. The Bun Festival is a traditional event celebrating the islanders' deliverance from famine centuries ago and is meant to placate ghosts and restless spirits. (Photo by Kin Cheung/AP Photo)

“Baliza, só com a Eliza” (Sport, only with Eliza). At 103 years, Eliza Bertucho Carrara proudly recalls his staff created by students at the time owned a driving school in Lapa, West Zone of São Paulo, on May 17, 2013. (Photo by Raul Zito/G1)

A man checks the interior of a Mercedes-Benz Unimog U5000 four-wheel-drive truck exhibited at a police equipment expo in Beijing, China, Wednesday, May 15, 2013. Chinese government spending on police, courts and other law enforcement to maintain social stability is projected to exceed outlays for national defense for the third year in a row this year. (Photo by Alexander F. Yuan/AP Photo)

The pack pedals during the 11th stage of the Giro d'Italia, Tour of Italy cycling race, from Tarvisio to Vajont, Wednesday, May 15, 2013. (Photo by Fabio Ferrari/AP Photo)

A Lancaster bomber during the Battle of Britain Memorial Flight performs a flypast over the Derwent Reservoir as part of a series of events to commemorate 70th anniversary of the Dambusters raid, May 16, 2013. (Photo by Rui Vieira/PA Wire)

A statue of Our Lady of Fatima is carried during a candlelight vigil at the Fatima Sanctuary in Fatima, Portugal, on May 12, 2013. Every year on May 12 and 13, thousands of Catholic faithful pilgrimage to Fatima's Sanctuary where it is believed the Virgin Mary was witnessed by three shepherd children, Lucia, Jacinta and Francisco, on May 13, 1917. (Photo by Francisco Seco/Associated Press)

German artist rosalie stands in her installation “Wagner – Hero Display” during the press preview of the exhibition “World Creators: Richard Wagner, Max Klinger, Karl May” on the occasion of the 200th birthday of Richard Wagner in the Museum of Fine Arts in Leipzig, central Germany, Wednesday, May 15, 2013. All three artists were born in the German state of Saxony. (Photo by Jens Meyer/AP Photo)

A U.S. Navy officer stands guard on Riverine Command Boat during a media tour ahead of the International Mine Countermeasures Exercise (IMCMEX), at the Bahrain Navy sea port in Manama May 12, 2013. Representatives from more than 40 nations will gather in Bahrain and waters of the Gulf region for the exercise, which is considered the largest exercise of its kind in the region. A British Royal Navy spokesperson said that it will be the first time for the British Royal Navy to head the entire exercise. (Photo by Hamad I Mohammed/Reuters)

Participants, with their heads sticking out from holes of a large white fabric, perform during a performance, “Divisor” during an exhibition, “A Journal of the Plague Year. Fear, Ghosts, Rebels. SARS, Leslie and the Hong Kong Story”, in Central business district of Hong Kong Friday, May 17, 2013. The art work was originally performed on the streets of Rio de Janeiro in 1968, created by the Late Brazilian artist Lygia Pape. (Photo by Kin Cheung/AP Photo)

Models present a creation by Indonesian fashion designer Jimmy Fei-Fei during the Jakarta Fashion and Food Festival in Jakarta, Indonesia, Thursday, May 16, 2013. (Photo by Achmad Ibrahim/AP Photo)

The Russian Soyuz space capsule, carrying U.S. astronaut Thomas Marshburn, Russian cosmonaut Roman Romanenko and Canadian astronaut Chris Hadfield, descends some 150 kilometers (94 miles) southeast of the town of Dzhezkazgan in central Kazakhstan, Tuesday, May 14, 2013. The Soyuz space capsule carrying a three-man crew returning from a five-month mission to the International Space Station landed safely Tuesday on the steppes of kazakhstan. (Photo by Sergei Remezov/AP Photo)

A man playfully places his face in the cutout part of a cardboard mural featuring a Tropicana dancer, during celebrations marking the upcoming International Day Against Homophobia, in Havana, Cuba, on May 11, 2013. About 500 people marched through the Cuban capital to the rhythm of conga drums in an early celebration of the international day against homophobia, commemorated annually on May 17. (Photo by Ramon Espinosa/Associated Press)

Activists wear masks of Indian Prime Minister Manmohan Singh during a protest against Singh, claiming he has not done anything for the state of Assam, where he was nominated from, in Gauhati, India, on May 15, 2013. (Photo by Anupam Nath/Associated Press)

A Filipino vendor recovers items as a firefighter directs a water hose towards a burning shopping mall in Manila, Philippines, 16 May 2012. A fire that broke out early 16 May at the Divisoria Mall could take days to put out, estimated firefighters. (Photo by Francis R. Malasig/EPA)

A man walks at the site of the collapsed garment-factory building in Savar, Bangladesh, on May 13, 2013. Nearly three weeks after the building collapsed, the search for the dead ended Monday at the site of the worst disaster in the history of the global garment industry. The death toll: 1,127. (Photo by A. M. Ahad/Associated Press)

Lightning strikes from a storm illuminate the sky above where damage is strewn about the street and light pole after a tornado in Cleburne, Texas, on May 15, 2013. Cleburne Mayor Scott Cain early Thursday declared a local disaster as schools canceled classes amid the destruction. (Photo by Tom Fox/The Dallas Morning News)

Marcelo Bastos warms up prior to the Skateboard Vert Final at the Montjuic Pool during the X-Games Barcelona, on May 16, 2013. (Photo by David Ramos/Getty Images)

Sr. Patricia Hall 75 who skydived in Galway, UK in aid of AWARE, on May 17, 2013. (Photo by Andrew Downes)

People move away from an Israeli policeman on a horse as Palestinians mark Nakba Day in Jerusalem, on May 15, 2013. Palestinians annually mark the “nakba”, or “catastrophe” – the term they use to describe their defeat and displacement in the war that followed Israel's founding in 1948. (Photo by Mahmoud Illean/Associated Press)

A woman is detained by Klamath County Sheriff's deputies outside of Bonanza, Oregon, on May 15, 2013. A Klamath Falls Herald and News report says more than 300 law enforcement officers have arrested dozens of people in raids described as an effort to dismantle a drug and weapons distribution ring uncovered after a double killing last year in Klamath County. (Photo by Dave Martinez/The Herald And News)

Two Chinese farmers got more than they bargained for when they pulled up the root of a fleece flower – and came face-to-face with the doppelganger of Homer Simpson, on May 17, 2013. The large root appears to have two bulging eyes and a prominent nose – giving it an uncanny resemblance to the famous cartoon character. With two offshoot roots shaped like arms, it even looks like it is pondering or confused – just what you would expect from the real Homer. (Photo by ImagineChina)

A man watches the removal of the Star Jet roller coaster that has been in the ocean for six months after the Casino Pier it sat on collapsed when Superstorm Sandy hit Seaside Heights, New Jersey, on May 14, 2013. (Photo by Mark Wilson/Getty Images)

Queen Elizabeth II attends the Obstacle Driving Competition in the Land Rover International Grand Prix during day four of the Royal Windsor Horse Show at Windsor Castle, Berkshire, May 11, 2013. (Photo by Steve Parsons/PA Wire)

This blend of two images taken by NASA’s Solar Dynamics Observatory shows a solar eruption that occurred on May 12, 2013. One image shows light in the 171-angstrom wavelength, the other in 131 angstroms. Scientists say the Mother’s Day solar flare was the strongest of the year and occurred on the side of the sun that faced away from Earth. (Photo by AP Photo/NASA's Solar Dynamics Observatory)

Competitors taking part in the Race Race Dirty weekend at Burghley House, Stamford, May 11, 2013. Rat Race consists of 200 obstacles over 20 differently-themed zones over a distance of 20 miles. (Photo by Rui Vieira/PA Wire)

Shaven-headed young boys play the Dongjasung (little monk) soccer match to celebrate Buddha's upcoming birthday on May 17 at Jogye temple in Seoul, South Korea, Tuesday, May 14, 2013. The children entered the temple to have an experience of monks' life for two weeks, called Little Buddha Camp. (Photo by Ahn Young-joon/AP Photo)

The Popocatepetl Volcano, 55 km southeast of Mexico City, is seen from Santiago Xalitxintla, in Puebla, spewing a cloud of ash and smoke, on May 14, 2013. The National Disaster Prevention Centre raised the alert level on Sunday to “yellow phase three”. (Photo by Ronaldo Schemidt/AFP Photo)

This undated photo provided by the United Nations Food and Agriculture Organization (FAO) shows a woman holding a plate with insects during an insect cuisine competition at an unknown location in Laos. The U.N. has new weapons to fight hunger, boost nutrition and reduce pollution, and they might be crawling or flying near you right now: edible insects. The Food and Agriculture Organization on Monday, May 13, 2013, hailed the likes of grasshoppers, ants and other members of the insect world as an underutilized food for people, livestock and pets. A 200-page report, released at a news conference at the U.N. agency's Rome headquarters, says 2 billion people worldwide already supplement their diets with insects, which are high in protein and minerals, and have environmental benefits. (Photo by Thomas Calame/AP Photo)

Fire engulfs the black bull sarchopagus contining Tjokorda Ngurah Wim Sukawati's corpse, during the royal cremation ritual in Ubud, Bali, Indonesia, on May 14, 2013. Tjokorda Ngurah Wim Sukawati died in a hospital on February 24 in Jakarta at the age of 90. The cremation ritual is an important tradition held for deceased members of the Puri Agung Ubud royal family. (Photo by Putu Sayoga/Getty Images)

Internally displaced boys shiver in the rain in a makeshift camp for Rohingya people in Sittwe, Myanmar, as Cyclone Mahasen approaches, on May 14, 2013. The U.N. said the cyclone, expected later this week, could swamp makeshift housing camps sheltering tens of thousands of Rohingya. Myanmar state television reported Monday that 5,158 people were relocated from low-lying camps in Rakhine state to safer shelters, but far more people are considered vulnerable. (Photo by Gemunu Amarasinghe/Associated Press)

Pope Francis frees a dove during his weekly general audience in St. Peter Square at the Vatican, Wednesday, May 15, 2013. As Francis toured the square in his open-topped popemobile at his Wednesday audience with the public, someone at the edge of the crowd thrust a white bird cage at him. Looking puzzled, his security detail took the cage, containing a pair of white doves, and handed it to Francis. Without hesitation, the pope opened the cage door, thrust a hand inside and extracted one dove, and with a flick of his hand, sent the bird flying over the square. (Photo by Alessandra Tarantino/AP Photo)

A Ukrainian woman handles a gun as a man explains how to handle it during an international weapons show in Kiev, Ukraine, Friday, May 17, 2013. The Ukrainian Ministry of Internal Affairs launched an initiative to change the law to allow Ukrainian citizens who have reached 18-years old to buy traumatic weapons, with the bill being submitted to Cabinet ministers for approval. (Photo by Efrem Lukatsky/AP Photo)

A home burns in Highland Township, Wisconsin, on May 14, 2013. Crews from Wisconsin and Minnesota tried to control a rapidly growing wildfire in northwestern Wisconsin that forced evacuations of the sparsely populated area. Several structures were destroyed in a mostly rural and wooded area as the forest fire grew to 9 square miles, the Wisconsin Department of Natural Resources said. (Photo by Clint Austin/The Duluth News-Tribune)

Afarmer carries bundles of wheat during a harvest at a farm in Cairo, Egypt, on May 13, 2013. The country's wheat crop is expected to be close to 10 million tons this season. (Photo by Hassan Ammar/Associated Press)