A woman walks against blowing snow in Evanston, Illinois, on February 8, 2014. (Photo by Nam Y. Huh/Associated Press)

A couple kisses, as the man does push-ups, during a kissing contest held in celebration of Valentine's Day at the Happy Valley amusement park in Beijing February 14, 2014. About 100 couples competed by kissing in various poses during the competition and an iPhone 5S was presented to the winning couple. (Photo by Kim Kyung-Hoon/Reuters)

A rebel fighter walks in front of a bushfire in a rebel controlled territory in Upper Nile State February 13, 2014. (Photo by Goran Tomasevic/Reuters)

A worker hauls in a rope while perched on the shoulder of the Christ the Redeemer statue during a media tour following a ceremony blessing the workers by the Archbishop of Rio de Janeiro, Dom Orani Tempesta, on February 14, 2014 in Rio de Janeiro, Brazil. The statue was damaged by multiple lightning strikes recently and crews are beginning to repair the damage while adding more lightning rods to the famed statue. (Photo by Mario Tama/Getty Images)

Switzerland's Dominique Gisin reacts after finishing the Women's Alpine Skiing Downhill at the Rosa Khutor Alpine Center during the Sochi Winter Olympics on February 12, 2014. (Photo by Alexander Klein/AFP Photo)

A child is seen amid the rubble of damaged buildings at a site hit by what activists said was a barrel bomb dropped by forces loyal to Syria's President Bashar al-Assad in Masaken Hanano in Aleppo February 13, 2014. (Photo by Mahmoud Hebbo/Reuters)

A Syrian man reacts as he carries the body of a child following a reported air strike by government forces on the al-Haidarya neighbourhood in the northern city of Aleppo on February 12, 2014. More than 136,000 people have been killed in Syria's nearly three-year war, and millions more forced to flee their homes. (Photo by Khaled Khatib/AFP Photo/Aleppo Media Centre)

Groom Roongroj Walailuk and bride Vina Wichan jump into the pond as they are chased by men dressed as pirates during a wedding ceremony ahead of Valentine's Day in Prachin Buri province, east of Bangkok February 13, 2014. Three Thai couples took part in the wedding ceremony which was arranged by a resort and aimed at strengthen the relationships of the couples through fun activities. (Photo by Damir Sagolj/Reuters)

Groom Wichan Vina, 32, holds the hand of his bride Wilailuk Roongros, 31, who fell on the ground as they both run from a giant ball decorated with flowers, called Run Way of Love, in Prachinburi province, Thailand, on February 13, 2014. They celebrated their wedding on the eve of Valentine's Day. (Photo by Wason Wanichakorn/Associated Press)

A U.S. Marine drinks the blood of a cobra during a jungle survival exercise with the Thai Navy as part of the “Cobra Gold 2014” joint military exercise, at a military base in Chanthaburi province February 13, 2014. About 13,000 soldiers from seven countries, Thailand, U.S., Singapore, Indonesia, Japan, South Korea and Malaysia are participating in the 11-day military exercise. (Photo by Athit Perawongmetha/Reuters)

A vendor moves from one train to another at a railway station in Kolkata February 12, 2014. India's Railway Minister Mallikarjun Kharge will present an interim railway budget for 2014/15 fiscal year beginning April on Wednesday. (Photo by Rupak De Chowdhuri/Reuters)

Dancers perform during the press conference to announce the first “World Salsa Expo” in Mexico City, on February 10, 2014. (Photo by Eduardo Verdugo/Associated Press)

A model poses for a portrait backstage before The Blonds fashion show during New York Fashion Week in New York February 12, 2014. (Photo by Carlo Allegri/Reuters)

Salsa dancers take pictures with their mobile phones during a press conference to announce the first “World Salsa Expo” in Mexico City, on February 10, 2014. Salsa bands, dancers and clubs from several different countries and genres will meet in Mexico City from March 4 to the 9th, to participate in the Expo. (Photo by Eduardo Verdugo/Associated Press)

An opposition demonstrator aims a slingshot at police during a protest against Venezuela's President Nicolas Maduro's government in Caracas February 12, 2014. A demonstrator (not pictured) was killed during the anti-government rally in Caracas on Wednesday, Reuters witnesses said. (Photo by Carlos Garcia Rawlins/Reuters)

A woman walks past a partition wall full of Valentines Day messages at the Darling Harbour in Sydney on February 13, 2014. Red roses and chocolates are the most popular gifts during Valentines Day. (Photo by Saeed Khan/AFP Photo)

Palestinian Salafists stand outside a shop on the eve of Valentine's day in Rafah in the southern Gaza Strip on February 13, 2014, the Salafists explained to shop owners that this festivity is an invasion of Western culture onto the Islamic culture. (Photo by Said Khatib/AFP Photo)

An Afghan internally displaced woman covers her face as she stands in Sakhi camp in Mazar-i-Sharif on February 10, 2014. Many families were forced to flee their homes in southern Afghanistan due to Taliban fighting and are forced to spend the harsh winter season at the camp in poverty. (Photo by Farshad Usyan/AFP Photo)

Katie Uhlaender of the United States brakes after her final run during the women's skeleton competition at the 2014 Winter Olympics, Friday, February 14, 2014, in Krasnaya Polyana, Russia. (Photo by Dita Alangkara/AP Photo)

Afghan residents sit outside a hut on the outskirts of Herat on February 12, 2014. Some nine million Afghans or 36 percent of the population are living in “absolute poverty” while another 37 percent live barely above the poverty line, according to a UN report. (Photo by Aref Karimi/AFP Photo)

Men wait for Sunday mass near a church at a village in a rebel-controlled territory in Upper Nile State, South Sudan, February 9, 2014. (Photo by Goran Tomasevic/Reuters)

Visitors and Tibetan monks look on as a giant thangka, a religious silk embroidery or painting displaying the Buddha portrait, is unveiled amid snowfalls at Langmu Lamasery in Gannan Tibetan Autonomous Prefecture, Gansu province, on February 12, 2014. (Photo by Reuters/Stringer)

A Somali fisherman carries a swordfish from the port to the market in Mogadishu, Somalia on February 11, 2014. (Photo by J. M. Lopez/AFP Photo)

An Afghan man carries balloons as he walks at Shuhada Lake in Kabul on February 10, 2014. Afghanistan's economy is recovering from decades of conflict but despite the significant improvement in the last decade it is extremely poor, landlocked, and highly dependent on foreign aid. (Photo by Wakil Kohsar/AFP Photo)

A Pakistani vegetable vendor sells carrots at a market in Lahore on February 10, 2014. Pakistan was on track to receive a third loan package worth 550 million dollars from the International Monetary Fund, the Washington-based lender indicated, saying the nation's economic recovery was gathering pace. The IMF approved a $6.7 billion bailout loan package for Pakistan in September 2013 to help the struggling nuclear-armed country achieve economic reforms, particularly in its troubled energy sector. (Photo by Arif Ali/AFP Photo)

Members of Iraq's Special Weapons and Tactics Team ) stand guard over blindfolded suspected members of the al-Qaida-linked Islamic State of Iraq and the Levant at the federal police headquarters in Basra, on February 11, 2014. Security forces arrested 14 suspected al-Qaida members during recent security operations in Basra. (Photo by Nabil al-Jurani/Associated Press)

An Iranian woman holds an anti-U.S. placard as she poses in front of an undated 1979 banner photo showing people with army members celebrating the Islamic revolution, during an annual rally marking the anniversary in Azadi (Freedom) Street, in Tehran, Iran, Tuesday, February 11, 2014. Tuesday marks the 35th anniversary of the revolution that toppled the pro-U.S. Shah Mohammad Reza Pahlavi and brought Islamists to power. (Photo by Ebrahim Noroozi/Associated Press)

Girls, with their faces painted in national colors, participate in a march for democracy in Manama, Bahrain, on February 11, 2014. Protesters chanted anti-government slogans during one of several protests organized in the run-up to Friday's third anniversary of an uprising demanding democracy in the Gulf island kingdom. Writing on the girls' faces reads “Bahrain, the revolution continues” and “Bahrain, revolution until victory”. (Photo by Hasan Jamali/Associated Press)