A man speaks on a mobile next to Telefonica's tower in Barcelona in this January 30, 2013 file photo. Li Ka-shing's Hutchison Whampoa Ltd has agreed to buy Telefonica's British mobile unit O2 for up to 10.25 billion pounds ($15.4 billion), as Asia's richest man makes his boldest bet yet to revamp his European telecoms business. (Photo by Albert Gea/Reuters)

A girl reads a book on her balcony as smoke rises from chimneys of a steel plant, on a hazy day in Quzhou, Zhejiang province in this April 3, 2014 file photo. China's manufacturing growth stalled for the second straight month in January and companies had to cut prices at a faster clip to win new business, adding to worries about growing deflationary pressures in the economy, a private survey showed. The HSBC/Markit Flash Manufacturing Purchasing Managers' Index (PMI) hovered at 49.8 in January, little changed from December's 49.6 and just below the 50-point mark that separates contraction from growth on a monthly basis. (Photo by Reuters/Stringer)

Lotte Mart customers make their way across the car park at the flooded Kelapa Gading business district in Jakarta, January 23, 2015. Floods inundated several areas of Jakarta after heavy rains in the capital city, local media reported on Friday. (Photo by Reuters/Beawiharta)

Policemen rest on an inflatable raft at the flooded Kelapa Gading business district in Jakarta, January 23, 2015. (Photo by Reuters/Beawiharta)

People wade through a flooded street at Kelapa Gading business district in Jakarta, January 23, 2015. (Photo by Reuters/Beawiharta)

People try to push up a bull which fell over, at a livestock market in Songming, Yunnan province, January 23, 2015. (Photo by Wong Campion/Reuters)

Troops prepare before NATO Secretary-General Jens Stoltenberg arrives for his visit at the KFOR (NATO'S Kosovo force) headquarters in Pristina January 23, 2015. (Photo by Hazir Reka/Reuters)

Horses and riders perform on stage during a dress rehearsal of Wolfgang Amadeus Mozart's cantata “Davide penitente” in Salzburg January 20, 2015. Salzburg's annual Mozart Week has something new this year. Along with the usual performances of music by Austria's most famous composer, it's got a ballet. Danced by horses. A dozen horses from the equestrian academy at Versailles performed in a sandy arena in front of rough stone arcades carved into a mountain side that sheltered an orchestra and choir. Led by the French horse choreographer Bartabas – the only name he uses – they improvised circular ballet movements to the music of Mozart. Picture taken January 20, 2015. (Photo by Dominic Ebenbichler/Reuters)

Horses and riders perform on stage during a dress rehearsal of Wolfgang Amadeus Mozart's cantata “Davide penitente” in Salzburg January 20, 2015. (Photo by Dominic Ebenbichler/Reuters)

Workers unload oranges at Thiriminglar fruit, vegetable and flower wholesale market in Yangon January 23, 2015. (Photo by Soe Zeya Tun/Reuters)

A passenger boat moves across the water while people onboard feed seagulls at Botahtaung Jetty in Yangon January 22, 2015. (Photo by Soe Zeya Tun/Reuters)

A man prepares to wear longyi as he sells bananas at Thiriminglar fruit, vegetable and flower wholesale market in Yangon January 23, 2015. (Photo by Soe Zeya Tun/Reuters)

A man sells bananas at Thiriminglar fruit, vegetable and flower wholesale market in Yangon January 23, 2015. (Photo by Soe Zeya Tun/Reuters)

Police arrest an Afghan man throwing stones towards a U.S. compound during a demonstration against the satirical French weekly Charlie Hebdo's cartoons of the Prophet Mohammad, in Kabul, January 23, 2015. French satirical magazine Charlie Hebdo published a picture of the Prophet Mohammad weeping on its cover last week after gunmen stormed its offices in Paris, killing 12 people. (Photo by Omar Sobhani/Reuters)

French soldiers stand guard next to a muslim prayer room in Nice January 23, 2015 as part of the highest level of “Vigipirate” security plan after the Islamist attacks in France. (Photo by Eric Gaillard/Reuters)

An injured man rests in the back of a pick-up truck after what activists said was shelling by forces loyal to Syria's President Bashar al-Assad, in Hamouria main square and market, Eastern Al-Ghouta, near Damascus January 23, 2015. (Photo by Msallam Abd Albaset/Reuters)

An Israeli border policeman points his weapon at Palestinian protesters during clashes following a protest against the nearby Jewish settlement of Qadomem, in the West Bank village of Kofr Qadom near Nablus January 23, 2015. (Photo by Abed Omar Qusini/Reuters)

A serviceman secures an area during a military drill at their base near the town of Gardabani south of the capital Tbilisi, January 23, 2015. According to Georgia's Defence Ministry, servicemen from the 43rd battalion of the IV mechanised brigade of the Georgian Armed Forces is conducting a six month course to take over from another Georgian unit participating in the International Security Assistance Force (ISAF), NATO military operation in Afghanistan. (Photo by David Mdzinarishvili/Reuters)

A Palestinian protester uses a slingshot to throw stones at Israeli troops during clashes near Israel's Ofer Prison, near the West Bank city of Ramallah January 23, 2015. (Photo by Mohamad Torokman/Reuters)

Marcel Hirscher of Austria slides into the finish area after his slalom run in the men's Alpine Skiing World Cup super combined race in Kitzbuehel January 23, 2015. (Photo by Leonhard Foeger/Reuters)

Mourners gather around the grave of Saudi King Abdullah following his burial in Riyadh January 23, 2015. Saudi King Salman pledged on Friday to maintain existing energy and foreign policies then quickly moved to appoint younger men as his heirs, settling the succession for years to come by naming a deputy crown prince from his dynasty's next generation. King Abdullah, who died early on Friday after a short illness, was buried in an unmarked grave in keeping with local religious traditions. (Photo by Reuters/Stringer)

People run toward kerosene cooking fuel pumps during the launch of the “kero correct” scheme at a Nigerian National Petroleum Corporation (NNPC) mega petrol station in Abuja January 23, 2015. The NNPC commenced sale of kerosene cooking fuel, which a majority of Nigerians depend on for cooking, at a reduced pump price of $0.27 per litre nationwide at all NNPC outlets. (Photo by Afolabi Sotunde/Reuters)

Ghana fans cheer during the team's 2015 African Cup of Nations Group C soccer match against Algeria in Mongomo January 23, 2015. (Photo by Mike Hutchings/Reuters)

Cameroon soccer supporters dance on the street ahead of Cameroon soccer national team Group D Match on Saturday against Guinea at Estadio De Malabo in Malabo, Equatorial Guinea, Friday, January 23, 2015. (Photo by Sunday Alamba/AP Photo)

A Democratic Republic of Congo fan cheers for his team during their Group B soccer match against Tunisia at the 2015 African Cup of Nations in Bata, January 26, 2015. (Photo by Mike Hutchings/Reuters)

Ghana fans await the start of their team's Group C soccer match against South Africa at the 2015 African Cup of Nations in Mongomo January 27, 2015. (Photo by Mike Hutchings/Reuters)

A Ghana fan awaits the start of their Group C soccer match against South Africa at the 2015 African Cup of Nations in Mongomo January 27, 2015. (Photo by Mike Hutchings/Reuters)

Ghana fans await the start of their team's Group C soccer match against South Africa at the 2015 African Cup of Nations in Mongomo, January 27, 2015. (Photo by Mike Hutchings/Reuters)

A Mali supporter painted in the colours of the country's national flag cheers as the team arrives to warm up before their 2015 African Cup of Nations Group D soccer match against Guinea in Mongomo January 28, 2015. (Photo by Mike Hutchings/Reuters)

Members of the media try earphones and a headset used for virtual reality at the Sundance Film Festival in Park City, Utah January 23, 2015. The content is viewed on a wraparound-style headset that project a 360-degree panorama, giving viewers the feel of being in the action. (Photo by Jim Urquhart/Reuters)

Christina Strange grieves over the casket of U.S. Sergeant First Class Ramon Morris of New York City, at Arlington National Cemetery January 23, 2015. Strange is the mother of Ramon's daughter, Ariana Morris. Ramon was killed in action in December of 2014 in Parwan Province, Afghanistan from injuries caused by an IED. (Photo by Gary Cameron/Reuters)

An expanding shell of debris called SNR 0519-69.0 is left behind after a massive star exploded in the Large Magellanic Cloud, a satellite galaxy to the Milky Way, as seen in this undated NASA handout image released January 23, 2015. Multimillion degree gas is seen in X-rays from Chandra, in blue. The outer edge of the explosion (red) and stars in the field of view are seen in visible light from the Hubble Space Telescope. (Photo by Reuters/NASA/CXC/SAO)

The HVB banking tower of the German HypoVereinsbank is illuminated with the title “Green Building” by German artist Philipp Geist in Munich, January 23, 2015. The installation with the motto “HVB – The Tower to inspire” is part of the Munich's “long night of architecture” festival and runs seven days. (Photo by Michael Dalder/Reuters)

Anthony “Rumble” Johnson of the U.S. poses on the scale during the weigh-in for Saturday's UFC light heavyweight championship mixed martial arts bout at Tele2 Arena in Stockholm, January 23, 2015. (Photo by Henrik Montgomery/Reuters/TT News Agency)

A family plays with a soccer ball on the beach on the Atlantic Ocean coast in Bata, in the Rio Muni region January 23, 2015. The African Nations Cup is being hosted by Equatorial Guinea from January 17 to February 8. (Photo by Amr Abdallah Dalsh/Reuters)

A demonstrator attacks a Caixa bank branch during a protest against fare hikes for city buses, subway and trains in Sao Paulo January 23, 2015. (Photo by Nacho Doce/Reuters)

A protester bleeds after sustaining an injury in clashes that broke out during a protest against fare hikes for city buses, subways and trains in Sao Paulo January 23, 2015. (Photo by Nacho Doce/Reuters)

Roland Paschmann of the gay carnival dancing group “Rosa Funken” performs in the dressing room ahead of the show “Roeschensitzung” in Cologne January 23, 2015. The 'Rosa Funken' group was founded as the first same-s*x carnival group in 1995 and performs at shows in Cologne. The carnival season started on November 11, 2014 and reaches the climax with “Rosenmontag” (Rose Monday) on February 16, the final day of the carnival when mass processions are held in Germany. (Photo by Ina Fassbender/Reuters)

Supporters of the Houthi movement clash with anti-Houthi protesters during a rally in Sanaa January 24, 2015. Thousands of Yemenis took to the streets on Saturday in the biggest demonstration yet against the Houthi group that dominates Yemen, two days after President Abd-Rabbu Mansour Hadi's resignation left the country in political limbo. Witnesses said up to 10,000 people began marching from Sanaa University towards Hadi's home some 3 kms (1.8 miles) away, repeating chants denouncing both the Shi'ite Muslim Houthi group and predominantly Sunni al Qaeda. (Photo by Mohamed al-Sayaghi/Reuters)

A woman wearing bikini takes part in an ice bucket challenge in Tianmenshan, Zhangjiajie, Hunan province, January 24, 2015. Around 30 people participated in the game during winter on top of Tianmenshan on Saturday, according to local media. (Photo by Reuters/Stringer)

Winter swimmer Li Wenyan, 43, stretches before getting in a partially frozen river in Taiyuan, Shanxi province, January 24, 2015. (Photo by Reuters/Stringer)

In this photo taken Sunday January 25, 2015, contestants with ice pop in their mouth dip in a pool of ice-water during the cold endurance challenge event on Zhangjiajie's Tianmen Mountain in central China's Hunan province. (Photo by AP Photo)

This picture taken on January 25, 2015 shows a participant taking part in an ice water challenge in Zhangjiajie, central China's Hunan province. Participants were required to stay in an ice pond, holding an ice block while eating ice-cream with an electric fan blowing at them. (Photo by AFP Photo/Stringer)