A South Korean Marine stands on a beach as amphibious assault vehicles (in background) approach the seashore during a joint landing operation by US and South Korean Marines in Pohang, 270 kms southeast of Seoul, on March 31, 2014. Meanwhile, the two Koreas traded hundreds of rounds of live artillery fire across their disputed maritime border, forcing South Korean islanders to take shelter a day after the North drove up tensions by threatening a new nuclear test. (Photo by Jung Yeon-Je/AFP Photo)

A Cambodian technician carries a back-pack mounted with a device housing 15 cameras as he demonstrates the technique used to digitally map the Angkor Wat temple, part of the Angkor architectural complex in north-western Cambodia on April 3, 2014. Cambodia's Angkor Wat has been digitally mapped for the first time, allowing people to visit the famed temples from the comfort of their armchair using Google Street View. (Photo by Christophe Archambault/AFP Photo)

An employee poses with a wax figure of US singer Katy Perry during a photocall at Madame Tussauds in central London on April 2, 2014. (Photo by Carl Court/AFP Photo)

Egyptian security forces stand guard at the scene after multiple explosions hit the area outside the main campus of Cairo University, killing at least two, in Giza, Egypt, Wednesday, April 2, 2014. The bombings targeted riot police routinely deployed at the location in anticipation of near-daily protests by students who support ousted Islamist President Mohammed Morsi and his Muslim Brotherhood group. (Photo by Sabry Khaled/AP Photo/El Shorouk Newspaper)

An Afghan policeman rides on top of his armored vehicle as he rushes to the scene as Taliban militants attacked the main Afghan election commission's headquarters on the outskirts of Kabul, Afghanistan, firing on the compound with rocket-propelled grenades and heavy machine guns from a house outside its perimeter wall, Saturday, March 29, 2014. (Photo by Anja Niedringhaus/AP Photo)

Aziza Yousef drives a car in Riyadh, Saudi Arabia, Saturday, March 29, 2014, as part of a campaign to defy Saudi Arabia's ban on women driving. In the six months since Saudi activists renewed calls to defy the kingdom's ban on female drivers, small numbers of women have gotten behind the wheel almost daily in what has become the country's longest such campaign. (Photo by Hasan Jamali/AP Photo)

A RAAF ground crewmen stands in front of the moving propellors of a Royal Malaysian Air Force C-130 Hercules after it landed at RAAF Base Pearce to to help with the search for debris or wreckage of the missing Malaysia Airlines Flight MH370 in Perth, Australia, Saturday, March 29, 2014. (Photo by Rob Griffith/AP Photo)

Members of a “Maidan” self-defence battalion take part in a training at a base of Ukraine's National Guard near Kiev March 31, 2014. Volunteers arrived at the base for training to qualify for service in the newly created National Guard. (Photo by Gleb Garanich/Reuters)

A Rohingya woman carrying her baby cooks her meal in a Rohingya village, during the national census in Sittwe March 31, 2014. The government on Sunday embarked on its first national census in more than 30 years. (Photo by Soe Zeya Tun/Reuters)

A model displays creations by Georgian ashion designer Ria Keburia at the Fashion Week in Moscow, Russia, Saturday, March, 29, 2014. (Photo by Denis Tyrin/AP Photo)

Media members run as riot police use water cannon to disperse protesters outside the Supreme Electoral Council (YSK) in Ankara April 1, 2014. Riot police fired water cannon in the Turkish capital on Tuesday to disperse thousands of people protesting outside the Supreme Electoral Council (YSK) against local election results which saw the ruling party dominate the electoral map. Prime Minister Tayyip Erdogan's Islamist-rooted AK Party kept control of the two biggest cities, Istanbul and Ankara, and increased its share of the national vote in Sunday's elections despite a corruption scandal dogging his government, but the opposition has said it will contest some of the results. (Photo by Reuters/Stringer)

A firefighter wears a Guy Fawkes mask as he kneels in front of a fire with two colleagues during a protest action by firemen during a meeting of the Christian union ACV/CSC on April 2, 2014 in Brussels. (Photo by Benoit Doppagne/AFP Photo)

An Afghan policeman directs Afghan special forces as they rush to the scene as Taliban militants attacked the main Afghan election commission's headquarters in the outskirts of Kabul, Afghanistan, firing on the compound with rocket-propelled grenades and heavy machine guns from a house outside its perimeter wall, Saturday, March 29, 2014. Dozens of employees and other people who had been inside the Independent Election Commission compound took cover in the basement, and no casualties were reported. But two warehouses were hit and set on fire, witnesses said. (Photo by Anja Niedringhaus/AP Photo)

An effigy known as “Ogoh-ogoh” symbolising evil is displayed in a field in the residential area in Jimbaran district as the Indonesian holiday island shut down for a day of silence to mark Nyepi, the Hindu new year on March 31, 2014. Retailers closed their shops and many tourists stayed inside their hotels for a day of reflection that is supposed to be free from daily routine, including work and play. Guards with sticks and traditional daggers enforced the public observance among the Hindu- majority population. (Photo by Sonny Tumbelaka/AFP Photo)

Marines, members of a military detachment stationed aboard the BRP Sierra Madre, take part in a flag retreat on the ship, at the disputed Second Thomas Shoal, part of the Spratly Islands, in the South China Sea March 29, 2014. According to local media, two Chinese Coast Guard vessels on Saturday tried to block a Philippine government civilian ship from bringing troops and supplies to the military detachment. BRP Sierra Madre has been aground on the disputed shoal, which is known as the Ren'ai reef in China and the Ayungin Shoal in the Philippines, since 1999. (Photo by Erik De Castro/Reuters)

A flag flies at half-staff on a log with the slope of the massive mudslide that struck Oso in the background near Darrington, Washington March 30, 2014. The official death toll from the March 22 catastrophe northeast of Seattle stood at 18, based on the number of victims whose bodies have been recovered and positively identified by medical examiners. But Snohomish County authorities have acknowledged finding 10 more sets of remains that have yet to be identified, putting the overall presumed body count at 28. (Photo by Ted S. Warren/Reuters)

A Palestinian man carries a sleeping girl as he waits with other Palestinians hoping to cross into Egypt to register their names at the Rafah crossing between Egypt and the southern Gaza Strip March 29, 2014. Egyptian authorities partially reopened Rafah border crossing, Gaza's main window to the world, on Saturday for three days after 50 days of its closure, Palestinian border officials said. Since the overthrow of Egyptian President Mohamed Mursi in July 2013, the authorities have largely kept the crossing closed, only opening it partially for limited periods of time, on humanitarian grounds. (Photo by Mohammed Salem/Reuters)

A Kenyan police bomb expert clad in a protective ballistic suit approaches the site of a suspected improvised explosive device, IED, on April 2, 2014 in Nairobi's increasingly restive Somali district of Eastleigh, a day after a prominent hardline Muslim cleric was shot dead in Mombasa. The cleric Abubaker Shariff Ahmed, was a vocal supporter of Osama bin Laden, and was on UN sanctions lists accused of being a “leading facilitator and recruiter of young Kenyan Muslims for violent militant activity in Somalia”, and of having “strong ties” with Shebab leaders. (Photo by Tony Karumba/AFP Photo)

Japan's Mao Asada competes during the women's free program at the ISU World Figure Skating Championships in Saitama, north of Tokyo, March 29, 2014. Picture taken with multiple exposure. (Photo by Issei Kato/Reuters)

A member of a local swimming club holds a Russian national flag as he dives in at the start of a 24-hour swimming marathon near the western Siberian city of Barnaul March 29, 2014. Thirty members of the club will swim in turn during the event, held to mark Crimea becoming part of Russia, local media reported. (Photo by Andrei Kasprishin/Reuters)

Actor Johnny Depp (C) shows a tattoo to co-hosts during a promotional event of his new movie “Transcendence”, on his first visit to China in Beijing March 31, 2014. (Photo by Reuters/Stringer)

An Afghan woman carries her crying child as she queues to receive her voter card at a voter registration centre in Kabul March 30, 2014. The Afghan presidential elections will be held on April 5. (Photo by Zohra Bensemra/Reuters)

Gear and weapons of victims are placed by the road as security forces inspect the site of a bomb attack on police in the troubled southern province of Narathiwat March 30, 2014. Two policemen were killed and three wounded in a roadside bomb attack as they were traveling to provide security to the polling stations for Sunday's Senate elections, local media reported. (Photo by Surapan Boonthanom/Reuters)

Riot police lift a comrade to fire tear gas during clashes in front of the Al-Azhar University's campus wall with students who are supporters of the Muslim Brotherhood and ousted Egyptian President Mohamed Mursi, in Cairo's Nasr City district March 30, 2014. The Muslim Brotherhood, which had propelled Mursi to power at the ballot box, accuses the army of staging a coup against a legitimately chosen president and destroying democracy. The demonstration against former Defence Minister Field Marshal Abdel Fattah al-Sisi after Sisi announced that he will run for presidential elections. (Photo by Amr Abdallah Dalsh/Reuters)

A Palestinian woman touches her face after an Israeli border police officer sprayed her with tear gas during confrontations at a Land Day protest outside Jerusalem's Old City March 30, 2014. March 30 marks Land Day, the annual commemorations of the killing by police of six Arab citizens in 1976 during protests against land confiscations in northern Israel's Galilee region. (Photo by Baz Ratner/Reuters)

The Living Goddess Kumari on her chariot is brought to witness performances during the “Ghodejatra” horse race festival in Kathmandu March 30, 2014. The Nepal Army performed various horse related sports and races during the festival. (Photo by Navesh Chitrakar/Reuters)

A Lebanese Sunni woman peers out of window of her house, which was damaged during clashes between pro and anti-Syrian government groups, as she looks at Lebanese army soldiers deployed in the streets of Sunni neighborhood of Bab Tabbaneh, in the northern port city of Tripoli, Lebanon, Wednesday April, 2, 2014. In a rare day of exuberant emotion, weary residents of two warring neighborhoods greeted each other with tears and cheers as hundreds of Lebanese soldiers deployed for the first time in years throughout the area, quelling violence between them that has killed at least 200 people in three years. The Lebanese army deployment in the northern city of Tripoli is the most determined plan yet by the government to bring peace to an area that was teetering into the neighboring Syrian civil war. (Photo by Hussein Malla/AP Photo)

Teodocio Perez, 71, covered with a thin layer of wet sand, looks out at the Pacific Ocean during his morning exercises on the Playa de Pescadores shore in Lima, Peru, Wednesday, April 2, 2014. Authorities lifted tsunami warnings for Chile’s long coastline early Wednesday. Six people were crushed to death or suffered fatal heart attacks, a remarkably low toll for such a powerful shift in the Earth’s crust. (Photo by Rodrigo Abd/AP Photo)

Pictured is Gary Nolan part from the hoard of Vikings who took to the streets of the capital to give commuters a flavour of what to expect at Dublin City Council's Battle of Clontarf Festival this Easter Weekend (19th-20th April), St Anne's Park in Raheny. More than 40,000 visitors are expected at the Battle of Clontarf Festival hosted by Dublin City Council to witness the spectacular clash of the Viking and Irish armies twice daily in the breathtaking battle re-enactments featuring over 500 living history re-enactors. (Photo by Sasko Lazarov/Photocall Ireland)

Tourists climb the Pyramid of the Moon at the Teotihuacan archaeological site on the outskirts of Mexico City, March 30, 2014. (Photo by Mariana Bazo/Reuters)

Luxury toilet paper with a 24 carat gold motifs is produced at the Tissue Design workshop of Fritz Loibl in Grafenau March 31, 2014. Each gold embossed toilet roll, which is handcrafted by owner Fritz Loibl with customised designs, costs 179 Euros (246 $) and are sold worldwide. (Photo by Michael Dalder/Reuters)

A visualization of the glow over North America represents fluorescence measured from land plants in early July, over a period from 2007 to 2011 in this picture provided by NASA on March 31, 2014. Data from satellite sensors show that during the North American northern hemisphere's growing season, the midwest region of the United States boasts more photosynthetic activity than any other spot on Earth, according to NASA and university scientists. (Photo by Reuters/Goddard Space Flight Center/NASA)

Rescue workers inspect a car caught under a landslide after an earthquake and tsunami hit the northern port of Iquique, April 2, 2014. The earthquake, with a magnitude of 8.2, struck off the coast of northern Chile near the copper exporting port of Iquique on Tuesday evening, killing six and triggering the tsunami that pounded the shore with 2-meter (7-foot) waves. (Photo by Cristian Vivero/Reuters)