Soldiers and police officers stand guard after an attacker with a knife hidden in his bag attacked three soldiers on an anti-terror patrol in front of a Jewish community center in Nice, southern France, Tuesday February 3, 2015. France has been on high alert since the attacks in the Paris region by three Islamic extremists that left 20 people dead, including the gunmen. More than 10,000 soldiers have been deployed around the country to protect sensitive locations, including major shopping areas, synagogues, mosques and transit hubs. (Photo by Lionel Cironneau/AP Photo)

A man dressed in Red Army World War II uniform walks toward the monument to Motherland during ceremonies marking the 72nd anniversary of the Battle of Stalingrad in the southern Russian city of Volgograd, once known as Stalingrad, Monday, February 2, 2015. The city, which was known as Stalingrad during World War II, suffered six months of intensive fighting that ended with the Red Army's defeat of the Nazis, which marked a decisive turn in World War II. (Photo by Dmitry Rogulin/AP Photo)

Models present creations by designer Ariam Beige during a fashion show as part of Flamenco International Fasion Week SIMOF 2015, in Sevilla, Spain, Feb. 5, 2015. The event runs until February 8. (Photo by Jose Manuel Vidal/EPA)

Vehicles and a building are covered with ice as firefighters work to keep a warehouse fire down in the Brooklyn borough of New York, Sunday, February 1, 2015. Firefighters are still dousing the massive warehouse fire that started Saturday. Fire Department officials say air quality in the Williamsburg section has been compromised by the blaze that left one person injured from smoke inhalation. (Photo by Seth Wenig/AP Photo)

Rabbit “Achileus Golden Kids” with owner Lenka Spilerova from Czeck Republic jumps over an obstacle during the rabbit show jumping European Championship in Sempach, Switzerland, January 31, 2015. The show jumping is one of the contests during the 23rd Swiss rabbit exhibiton were some 2,000 breeders show their rabbits. (Photo by Peter Klaunzer/EPA)

Kashmiri Muslim devotees pray as the head priest displays a relic of Sufi Saint Syed Abdul Qadir Jilani outside his shrine in Srinagar, India, Sunday, February 1, 2015. Thousands of devotees thronged the shrine Sunday to mark the saint's Urs or yearly commemoration. (Photo by Mukhtar Khan/AP Photo)

A Bangladeshi homeless child carries a stray dog as she plays at a park in Dhaka, Bangladesh, Monday, February 2, 2015. (Photo by A. M. Ahad/AP Photo)

A man wears a horse mask during the Campus Party technology festival in Sao Paulo, Brazil, Tuesday, February 3, 2015. Campus Party is an annual week-long, 24-hour technology festival that gathers hackers, developers, gamers and computer enthusiasts. (Photo by Andre Penner/AP Photo)

Visitors walk through colorful illuminated ice structures at the Shikotsukoonsen Ice Festival in Shikotsukoonsen, outskirts of Chitose, northern Japan, February 6, 2015. The lowest temperature at the lakeside town was minus 16 degrees Celsius on February 6. The ice festival is held from January 30 to February 33. (Photo by Kimimasa Mayama/EPA)

Visitors take picures of a snow sculpture of depicting Star Wars displayed at the 66th Sapporo Snow Festival venue at Odori Park in Sapporo, northern Japan, February 5, 2015, the opening day of the mid-winter festival. The snow festival is held through February 11 and 204 snow and ice sculptures are displayed at three venues, mainly at Odori Park. It is expected more than 2.4 millions of visitors enjoy the festival during the week. The amount of snow transported for the festival is equivalent to 6,500 five-ton trucks. (Photo by Kimimasa Mayama/EPA)

A person stands on stage in front of ice sculptures illuminated at the 66th Sapporo Snow Festival venue at Odori Park in Sapporo, northern Japan, February 5, 2015, the opening day of the mid-winter festival. (Photo by Kimimasa Mayama/EPA)

Visitors stand in the 'My History. Rurikovichi' multimedia exhibition devoted to the period of Rurikovichi (Rurik dynasty) at the Lenexpo exhibition complex in St. Petersburg, Russia, 03 February 2015. The exhibition tells about 740 years of ancient Russian history and its rulers and runs from 30 January to 15 February. (Photo by Anatoly Maltsev/EPA)

South Korean tradition honor guards salute during a welcoming ceremony of the Chinese Defense Minister Chang Wanquan (not pictured) at the headquarters of the Defense Ministry in Seoul, South Korea, 04 February 2015. Chang Wanquan arrived in Seoul on a three-day visit to discuss the two countries' military cooperation exchange and Northeast Asia security situation. (Photo by Jeon Heon-Kyun/EPA)

Cyclists in action during the third stage of the 2015 Dubai Tour in Dubai, United Arab Emirates, 06 February 2015. (Photo by Claudio Peri/EPA)

Two employees of Nice town hall, carry a string of balloons on the Promenade des Anglais, in Nice, southeastern France, Friday, February 6, 2015. Balloons designed for the Foundation “Hospitals Paris-France”, chaired by Bernadette Chirac, former France's President Jacques Chirac's wife, organized every year, the “Yellow coins operation” to improve the lives of hospitalized children and adolescents. (Photo by Lionel Cironneau/AP Photo)

Groundhog Club handler Ron Ploucha holds Punxsutawney Phil, the weather prognosticating groundhog, during the 129th celebration of Groundhog Day on Gobbler's Knob in Punxsutawney, Pa. Monday, February 2, 2015. Phil saw his shadow, predicting six more weeks of winter weather. (Photo by Gene J. Puskar/AP Photo)

Canadian artists Catherine Audy and Alexis Trudel, known as the Duo Catalexi, perform on the stage of the Phenix circus in Paris, Saturday January 31, 2015, as part of Tomorrow's Circus World Festival. (Photo by Remy de la Mauviniere/AP Photo)

Tex Chamness holds Bee Cave Bob while Ralph Fisher, right, cleans off his snout at the West Pole in Bee Cave, Texas, Monday, February 2, 2015. Every Groundhog Day at the West Pole Bee Cave Bob, an armadillo, predicts the Texas weather and political climate by exiting his borough at the end of a concrete slab painted like a highway. This year Bee Cave Bob predicted an early spring. (Photo by Deborah Cannon/AP Photo/Austin American-Statesman)

This picture taken on February 1, 2015 shows participants competing in a tofu (beancurd) wrestling competition in Fogang county, south China's Guangdong province. Participants, mostly women, fight it out in an inflatable pool which is filled with nearly two tons of fresh milk and tofu, in a promotion to attract tourists for the upcoming Chinese Lunar New Year holiday. The upcoming Chinese lunar new year of the sheep, which will fall on February 19 this year, marks the biggest festival of the year in China as hundreds of millions of people journey across the country to celebrate the season with their families. (Photo by AFP Photo/Stringer)

In this January 30, 2015 photo, statues of baby Jesus are displayed for sale at La Merced market ahead of the February 2 feast day of the Virgin of Candelaria in Mexico City. Small, simple figures can be bought for as little as 25 pesos, or less than $2, while fancier versions sell for more than 150 pesos, or more than $10. Catholic faithful in Mexico honor the story of the infant Christ being presented before the temple in Jerusalem by adorning a figure of baby Jesus in fine clothing and praying for blessings throughout the year. (Photo by Eduardo Verdugo/AP Photo)

“The Seeker” a sculpture by artist Stephen LaGattuta, sports heart designed shorts along the John and Dede Howard Family Recreational Trail in St. Joseph, Mich., Tuesday, February 3, 2015. The glass, steel, winterstone, and brass piece of art is part of the Krasl Art Center's Biennial Sculpture Invitational. (Photo by Don Campbell/AP Photo/The Herald-Palladium)

City of Winona, Minn., employees cut and remove blocks of ice from East Lake Winona on Thursday, Feb. 5, 2015, in preparation for the Goose Bump Jump and Cardinal Plunge this Saturday. In their 10th year opening a 25-foot by 35-foot hole in the ice, the city crew has the process down to a science. Ice blocks were cut with chainsaws and pulled up with a pick on a tractor. The 17-inch thick blocks were then pushed to the side and out of the way. (Photo by Andrew Link/AP Photo/Winona Daily News)

View of a dead tree – normally underwater – at Funil Hydroelectric Plant reservoir, in Resende, about 160km west from Rio de Janeiro, Brazil, on February 3, 2015. A severe drought – the worst in the country since 1930 – has hit Brazil's three most populous states: São Paulo, Rio de Janeiro and Minas Gerais. (Photo by Yasuyoshi Chiba/AFP Photo)

Sri Lankan traditional dancers perform in front of the Gangarama Temple during the Navam Perahera festival in Colombo on February 3, 2015. Monks, drummers, dancers and some 50 trained elephants, mostly from entral part of the island, thronged into Colombo from various regions of Sri Lanka to participate in the city's biggest two day annual Buddhist procession starting February 2. (Photo by Ishara S. Kodikara/AFP Photo)

New England Patriots tight end Rob Gronkowski hangs out of a duck boat as fans cheer during a parade in Boston, Wednesday, February 4, 2015, to honor the NFL football team's victory over the Seattle Seahawks in Super Bowl XLIX in Glendale, Ariz. (Photo by Charles Krupa/AP Photo)

An employee for Japanese character goods maker Sanrio displays a prototype model of a Hello Kitty branded toilet seat at Sanrio's headquarters in Tokyo on February 2, 2015. The toilet seat has seat heating and warm water shower functions. (Photo by Yoshikazu Tsuno/AFP Photo)

A young settler holding a wooden rifle stands next to an Israeli soldier as he secures a street during the visit of Israeli President Reuven Rivlin at the Cave of the Patriarchs in the Old City of West Bank city Hebron, 02 February 2015. Rivlin came to Hebron to inaugurate a newly developed Hebron Heritage Museum. (Photo by Abir Sultan/EPA)

To announce Sotheby's forthcoming auction on the 12th of February 2015 in support of the 1 in 11 campaign led by Lionel Messi, FC Barcelona Foundation, Unicef and Rota, football freestyle world champion John Farnworth performs in front of 'Lionel Messi and a Universe of Flowers' by Takashi Murakami at Sotheby's on February 6, 2015 in London, England. (Photo by Tristan Fewings/Getty Images for Sotheby's)

The westbound span of the obsolete Chain of Rocks Canal Bridge, in St. Louis, Mo., is demolished, Tuesday, February 3, 2015, resulting in the closure of Interstate 270 in both directions between Riverview Boulevard in St. Louis and Illinois Route 3. The eastbound span was destroyed on Jan. 20. (Photo by Christian Gooden/AP Photo/St. Louis Post-Dispatch)

Activists of the banned Pakistani charity organisation, Jamaat-ud-Dawa (JuD) shout slogans during a protest to mark Kashmir Solidarity day in Peshawar on February 5, 2015. Pakistan observed Kashmir Solidarity Day on February 5 to denounce Indian rule in the disputed Himalayan region claimed in whole by both countries. (Photo by A. Majeed/AFP Photo)

An injured passenger (L) is escorted by emergency personnel up the river bank after a TransAsia ATR 72-600 turboprop plane crash-landed into the Keelung river outside Taiwan's capital Taipei in New Taipei City on February 4, 2015. The low-flying passenger plane, TransAsia Flight GE235 with 58 people on board, clipped a road bridge and plunged into the river outside Taiwan's capital with at least nine feared dead and many trapped inside. (Photo by Sam Yeh/AFP Photo)

A car is buried in the snow in Bourguignon, eastern France, on February 1, 2015. (Photo by Sebastien Bozon/AFP Photo)

Pilot Skip Stewart of US performs a stunt during the Ilopango Air Show on air base in San Salvador on January 31, 2015. (Photo by Marvin Recinos/AFP Photo)

A vendor carries an oversized teddy bear to be sold as a Valentine's Day gift, in the central market of Lima, Peru, Wednesday, February 4, 2015. (Photo by Esteban Felix/AP Photo)