Egyptian people wave the national flag as army helicopters fly above Egypt's landmark Tahrir square on July 4, 2013. (Photo by Gianluigi Guercia/AFP Photo)

Tribesmen lead their camels through the sand dunes of the Liwa desert, 220 kms west of Abu Dhabi, on November 23, 2013. (Photo by Karim Sahib/AFP Photo)

Riders reach the crest of a dune during the opening lap of the main race of the 2013 RHL Weston beach race in Weston-Super-Mare, southwest England, on October 13, 2013. (Photo by Adrian Dennis/AFP Photo)

People standing on balconies look at participants as they run in front of Alcurrucen's bulls during the first bull run of the San Fermin Festival, on July 7, 2013, in Pamplona, northern Spain. (Photo by Pedro Armestre/AFP Photo)

U.S. golfer Tiger Woods hits a ball as he poses during an event to promote the upcoming Turkish Airlines Open golf tournament, on the Bosphorus Bridge that links the city's European and Asian sides, in Istanbul, on November 5, 2013. (Photo by Bulent Kilic/AFP Photo)

Pakistani people walk through a storm near the Ravi river in Lahore on September 15, 2013. (Photo by Arif Ali/AFP Photo)

People run away as Turkish riot policemen fire tear gas on Taksim square on June 11, 2013. (Photo by Bulent Kilic/AFP Photo)

Red Bull driver Sebatian Vettel of Germany celebrates winning the Formula One Indian Grand Prix 2013 at the Buddh International circuit in Greater Noida, on the outskirts of New Delhi on October 27, 2013. (Photo by Prakash Singh/AFP Photo)

An Indian street child plays in a dry river bed after flood waters receded in Allahabad on October 25, 2013. (Photo by Sanjay Kanojia/AFP Photo)

Afghan schoolchildren take lessons in an open classroom at a refugee camp on the outskirts of Jalalabad, Nangarhar province on December 1, 2013. (Photo by Noorullah Shirzada/AFP Photo)

An Indian youth dangles from a power line before diving into the floodwaters of an overflowing Ganges river in Allahabad on August 6, 2013. (Photo by Sanjay Kanojia/AFP Photo)

A sculpture is silhouetted against the full moon in Hanover, central Germany, on December 16, 2013. (Photo by Julian Stratenschulte/AFP Photo)

Indian electricians adjust electric cables set up temporarily on the banks of the river Ganga in preparation for the annual Hindu religious fair of Magh Mela in Allahabad, on December 16, 2013. (Photo by Sanjay Kanojia/AFP Photo)

People walk around a piece of art by Gino de Dominicis called “Time, Error, Space” (1969) representing the skeleton of a man walking with his dog as part of the exhibition “Anni 70 Arte a Roma” (70's Art in Rome) during a press preview at the Palazzo delle Esposizioni on December 16, 2013 in Rome. (Photo by Gabriel Bouys/AFP Photo)

Catholic pilgrims attending World Youth Day (WYD) crowd Copacabana beach in Rio de Janeiro on July 28, 2013 after spending the night sleeping here following a prayer vigil headed by Pope Francis. (Photo by Vanderlei Almeida/AFP Photo)

Two Polish nuns look at people bathing as hundreds of thousands of young Catholic pilgrims attending World Youth Day (WYD) start gathering at Copacabana beach in Rio de Janeiro for a prayer vigil with Pope Francis, on July 27, 2013. (Photo by Yasuyoshi Chiba/AFP Photo)

This picture taken on July 27, 2013 shows people trying to cool off at a water park in Suining, southwest China's Sichuan province, as a heatwave hit several provinces in China. (Photo by AFP Photo)

Rescue workers pass on a boat the overflooded old city of Passau, southern Germany, on June 3, 2013. Due to heavy and ongoing rainfalls, parts of the southern state of Bavaria were flooded. (Photo by Christof Stache/AFP Photo)

Czech Michal Navratil dives for a joke as superman after of the men's high diving final competition at the FINA World Championships in Moll de la Fusta port in Barcelona on July 31, 2013. (Photo by Javier Soriano/AFP Photo)

A US Capitol Police Officer walks past a statue of Gerald Ford, who was US president during the 1976 shutdown of the federal government, in the Rotunda while the building was closed to tours on Capitol Hill October 1, 2013 in Washington, DC. (Photo by Brendan Smialowski/AFP Photo)

Lightning strikes during a thunder storm as tornado survivors search for salvagable stuffs at their devastated home on May 23, 2013, in Moore, Oklahoma. (Photo by Jewel Samad/AFP Photo)

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” on May 15, 2013 in Betunia near the West Bank city of Ramallah. (Photo by Abbas Momani/AFP Photo)

Bayern Munich's defender Jerome Boateng (R) pours beer on Bayern Munich's French midfielder Franck Ribery while celebrating their champion title, after winning 3:0 the German first division Bundesliga football match between Bayern Munich and FC Augsburg in Munich, southern Germany, on May 11, 2013. (Photo by Christof Stache/AFP Photo)

This frame grab taken from AFPTV footage received on May 28, 2013 shows rescue workers breaking away bits of a pipe to remove a newborn baby boy stuck inside in the city of Jinhua, in the eastern province of Zhejiang. The newborn baby boy was rescued from a sewage pipe in a Chinese apartment building after being flushed down a toilet, state media said, provoking online outrage on May 28. (Photo by AFP Photo)

A Bahraini girl is carried by her mother during the funeral of Sayed Omran Sayed Hameed, on May 28, 2013, in the village of Karzakkan, south of Manama. (Photo by Mohammed Al-Shaikh/AFP Photo)

An Indian forestry worker walks past the body of a tusker elephant after it was struck by a train at the Buxa Tiger Reserve, some 12 kms from Alipurduar on March 5, 2013. (Photo by AFP Photo)

The Aurora Borealis bright up the sky at twilight on March 17, 2013 between the towns of Are and Ostersund, Sweden. (Photo by Jonathan Nackstrand/AFP Photo)

US President Barack Obama and First Lady Michelle Obama arrive to board Air Force One at Andrews Air Force Base in Maryland on April 18, 2013. (Photo by Jewel Samad/AFP Photo)

A Somali woman reacts on March 18, 2013 near the site of a car bomb in central Mogadishu. (Photo by Mohamed Abdiwahab/AFP Photo)

Woman throws bras on March 25, 2013 at the esplanade des droits de l'homme, in front of the Eiffel tower in Paris, during a happening called by “Pink Bra Bazzar”, a French organization fighting against and sensitizing on breast cancer. (Photo by Pierre Verdy/AFP Photo)

Cranes operated by Bangladeshi Army personnel are pictured at the scene following the April 24 collapse of an eight-storey building in Savar, on the outskirts of Dhaka, on April 29, 2013. (Photo by AFP Photo/STR)

This video grab broadcast by Bulgarian television channel BTV shows a man (R) pointing a pistol at leader of the Turkish minority Movement for Rights and Freedoms (MRF) party Ahmed Dogan during his speech at a national party conference in Sofia on January 19, 2013. (Photo by AFP Photo/BTV)

Unknown anti-gay activist hits Russia's gay and LGBT rights activist Nikolai Alexeyev (C) during unauthorized gay rights activists rally in cental Moscow on May 25, 2013. (Photo by Andrey Svitailo/AFP Photo)

Football superstar David Beckham (R) falls down after illustrating how to take a free kick during a visit to the Zall Football Club in Wuhan, central China's Wuhan province on March 23, 2013. (Photo by AFP Photo)

Malian soldiers fight while clashes erupted in the city of Gao on February 21, 2013 and an apparent car bomb struck near a camp housing French troops as Malian and foreign forces struggled to secure Mali's volatile north against Islamist rebels. (Photo by Frederic Lafargue/AFP Photo)

Sasha (L) and Malia Obama, daughters of US President Barack Obama, take a photo of themselves during the Presidential Inaugural Parade on January 21, 2013 in Washington, DC. (Photo by Joe Klamar/AFP Photo)

Women sunbath as Ferrari's Brazilian driver Felipe Massa drives past during the third practice session at the Circuit de Monaco in Monte Carlo on May 25, 2013 ahead of the Monaco Formula One Grand Prix. (Photo by Alexander Klein/AFP Photo)

Residents walk past buildings burning in riot-hit Meiktila, central Myanmar on March 21, 2013. (Photo by Soe Than Win/AFP Photo)

An Iranian man who was fixing explosives wires run away after setting ablaze 50 tons of drugs seized in recent months in eastern Tehran on June 26, 2013 to mark the International Day Against Drug Abuse and Illicit Trafficking. (Photo by Behrouz Mehri/AFP Photo)

A French soldier wearing a skeleton mask stands next to a tank in a street in Niono, on January 20, 2013. (Photo by Issouf Sanogo/AFP Photo)

Cardinals attend a mass at the St Peter's basilica before the start of the conclave on March 12, 2013 at the Vatican. (Photo by Gabriel Bouys/AFP Photo)

US President Barack Obama plays a learning game while visiting children at College Heights Early Childhood Learning Center February 14, 2013 in Decatur, Georgia. (Photo by Brendan Smialowski/AFP Photo)

Egyptian supporters of deposed president Mohamed Morsi sit in front of barbed wire fencing that blocks the access to the headquarters of the Republican Guard in Cairo on July 8, 2013. (Photo by Mahmud Hams/AFP Photo)

People walk amongst debris next to a ship washed ashore in the aftermath of Super Typhoon Haiyan at Anibong in Tacloban, eastern island of Leyte on November 11, 2013. (Photo by Noel Celisnoel Celis/AFP Photo)

Survivors of Super Typhoon Haiyan march during a religious procession in Tolosa on the eastern Philippine island of Leyte on November 18, 2013 over one week after Super Typhoon Haiyan devastated the area. (Photo by Philippe Lopez/AFP Photo)

Egyptian protesters calling for the ouster of President Mohamed Morsi gather in Cairo's landmark Tahrir Square on July 2, 2013 as laser lights (L) directed at the government building spell “Game Over”. (Photo by Khaled Desouki/AFP Photo)