A rebel fighter carries his weapon as he walks in front of a rainbow in Ratian village, north of Aleppo...A rebel fighter carries his weapon as he walks in front of a rainbow in Ratian village, north of Aleppo, after what the rebels said was an offensive against them by forces loyal to Syria's President Bashar al-Assad that attempted to advance in the village but failed to February 18, 2015. Battles in and around the Syrian city of Aleppo have killed at least 70 pro-government fighters and more than 80 insurgents after the army launched an offensive there, a monitoring group said on Wednesday. Picture taken February 18, 2015. REUTERS/Ammar Abdullah    (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)

Ammar Abdullah/Reuters

A rebel fighter carries his weapon as he walks in front of a rainbow in Ratian village, north of Aleppo, after what the rebels said was an offensive against them by forces loyal to Syria‘s President Bashar al-Assad that attempted to advance in the village but failed. 

A pro-Russian rebel takes a ribbon from his arm in Debaltseve, eastern Ukraine on Thursday, Feb. 19, 2015. The ribbons are used as a form of identification. After weeks of relentless fighting, the embattled Ukrainian rail hub of Debaltseve fell Wednesday to Russia-backed separatists, who hoisted a flag in triumph over the town. The Ukrainian president confirmed that he had ordered troops to pull out and the rebels reported taking hundreds of soldiers captive.

Peter Leonard/AP

A pro-Russian rebel takes a ribbon from his arm in Debaltseve, eastern Ukraine on Thursday. The ribbons are used as a form of identification. After weeks of relentless fighting, the embattled Ukrainian rail hub of Debaltseve fell Wednesday to Russia-backed separatists, who hoisted a flag in triumph over the town

A migrant and her son leave the immigration centre through a fence on the southern Italian island of Lampedusa February 19, 2015. Hundreds of thousands of migrants have arrived in southern Italy in unsafe boats, their departure from Libya facilitated by people smugglers operating freely in conditions of near-anarchy

Alessandro Bianchi/Reuters

A migrant and her son leave the immigration centre through a fence on the southern Italian island of Lampedusa on Thursday. Hundreds of thousands of migrants have arrived in southern Italy in unsafe boats, their departure from Libya facilitated by people smugglers operating freely in conditions of near-anarchy

Model Amanda Lepore arrives before The Blonds 2015 collection show during New York Fashion Week...Model Amanda Lepore arrives before The Blonds 2015 collection show during New York Fashion Week in the Manhattan borough of New York February 18, 2015. Picture taken February 18, 2015.    REUTERS/Carlo Allegri   (UNITED STATES - Tags: FASHION TPX IMAGES OF THE DAY)

Carlo Allegri/Reuters

Model Amanda Lepore arrives before The Blonds 2015 collection show during New York Fashion Week in the Manhattan borough of New York 

Would-be immigrants sit atop a border fence

Angela Rios/AFP/Getty Images

Would-be immigrants sit on a border fence separating Morocco from the north African Spanish enclave of Melilla in an attempt to jump over on Thursday.

Nestle CEO Bulcke interacts with a robot named "Pepper" after the full year 2014 results conference in Vevey...Nestle Chief Executive Officer (CEO) Paul Bulcke (R) interacts with a robot named "Pepper" after the full year 2014 results conference at the company headquarters in Vevey February 19, 2015. Nestle in December 2014 began to use the robots to help sell its coffee makers at electronics stores across Japan, becoming the first corporate customer for the chatty, bug-eyed androids unveiled in June 2014 by tech conglomerate SoftBank Corp. REUTERS/Denis Balibouse

Denis Balibouse/Reuters

Nestle Chief Executive Officer Paul Bulcke interacts with a robot named “Pepper” after the full year 2014 results conference at the company headquarters in Vevey, Switzerland. In December 2014 Nestle began to use the robots to help sell its coffee makers at electronics stores across Japan, becoming the first corporate customer for the chatty, bug-eyed androids by tech conglomerate SoftBank Corp. 

  © Favaz Aziz/Reuters

Afghan refugee women, clad in a burqa, climb on a truck to be repatriated to Afghanistan, at the United Nations High Commissioner for Refugees (UNHCR) office on the outskirts of Peshawar

Photographers shooting an aerial display...Photographers shooting an aerial display are reflected in glass panels at Yelahanka Airforce Station in Bangalore on February 19, 2015, on the second day of Aero India 2015. AFP PHOTO/ Manjunath KIRANMANJUNATH KIRAN/AFP/Getty Images

Manjunath Kiran/AFP/Getty

Photographers shooting an aerial display are reflected in glass panels at Yelahanka Airforce Station in Bangalore on the second day of Aero India 2015 

A reveller blows fire during Lunar New Year celebrations at Manila's Chinatown...A reveller blows fire during Lunar New Year celebrations at Manila's Chinatown February 19, 2015. The Chinese Lunar New Year on February 19 will welcome the Year of the Sheep (also known as the Year of the Goat or Ram).      REUTERS/Erik De Castro  (PHILIPPINES - Tags: SOCIETY)

Erik De Castro/Reuters

A reveller blows fire during Lunar New Year celebrations at Manila‘s Chinatown. The Chinese Lunar New Year on Thursday will welcome the Year of the Sheep (also known as the Year of the Goat or Ram) 

The horse and hounds of the Cheshire Forest Hunt prepares for a mid-week hunt on the 10th anniversary of the ban on hunting with hounds on February 18, 2015 in Knutsford, England. The riders and hounds of the Cheshire Forest Hunt set off on a drag hunt through the Cheshire countryside. It is 10 years today since the ban on hunting with hounds came into force after The Hunting Act was approved by parliament after 700 hours of debate in the house.

Christopher Furlong/Getty Images

The horse and hounds of the Cheshire Forest Hunt prepares for a mid-week hunt on the 10th anniversary of the ban on hunting with hounds on Wednesday in Knutsford, England. The riders and hounds of the Cheshire Forest Hunt set off on a drag hunt through the Cheshire countryside

The Hong Kong team competes during the women's team pursuit qualifying race at the UCI Track Cycling World Cup in Saint-Quentin-en-Yvelines, near Paris...REFILE - CORRECTING HEADLINE  The Hong Kong team, including Pang Yao, Yang Qianyu, Leung Bo Yee and Meng Zhao Juan, competes during the women's team pursuit qualifying race at the UCI Track Cycling World Cup in Saint-Quentin-en-Yvelines, near Paris, February 18, 2015.

Charles Platiau/Reuters

The Hong Kong team, including Pang Yao, Yang Qianyu, Leung Bo Yee and Meng Zhao Juan, competes during the women’s team pursuit qualifying race at the UCI Track Cycling World Cup in Saint-Quentin-en-Yvelines, near Paris on Wednesday

A general view of the container ship Lysblink Seaways grounded at Kilchoan, West Ardnamurchan in the West Highlands

Andrew Milligan/PA

The container ship Lysblink Seaways grounded at Kilchoan, Ardnamurchan in the West Highlands, Scotland on Wednesday

Immigrants wait to board a ship on Wednesday in Lampedusa, Italy. Hundreds of migrants have recently arrived in Lampedusa fleeing the attacks by ISIS in Libya

Tullio M. Puglia/Getty Images

Immigrants wait to board a ship on Wednesday in Lampedusa, Italy. Hundreds of migrants have recently arrived in Lampedusa fleeing the attacks by militant group Islamic State in Iraq and the Levant, known as Isis, in Libya

Ukrainian servicemen ride on a tank as they leave area around Debaltseve, eastern Ukraine near Artemivsk February 18, 2015. Weary Ukrainian troops, some in columns, some in cars, began arriving on Wednesday from the besieged town of Debaltseve in Artemivsk, a Reuters witness said.

Gleb Garanich/Reuters

Ukrainian troops ride on a tank as they leave Debaltseve, eastern Ukraine on Wednesday

People walk under heavy snow in the Asian side of Istanbul, on February 18, 2015.

Bulent Kilic/AFP

People walk in heavy snow in Istanbul on Wednesday

 Chinese folk artists perform during the opening ceremony of the Spring Festival Temple Fair at the Temple of Earth park on February 18, 2015 in Beijing, China. The Chinese Lunar New Year of Sheep also known as the Spring Festival, which is based on the Lunisolar Chinese calendar, is celebrated from the first day of the first month of the lunar year and ends with Lantern Festival on the Fifteenth day.

Lintao Zhang/Getty Images

Chinese artists perform at the Spring Festival Temple Fair on Wednesday in Beijing. The lunar new year of the sheep also known as the spring festival is celebrated from the first day of the first month of the lunar year and ends with the lantern festival on the 15th day

Afghan families watch the live broadcast of the Cricket World Cup match between Afghanistan and Bangladesh at a refugee camp in Kabul...Afghan families watch the live broadcast of the Cricket World Cup match between Afghanistan and Bangladesh at a refugee camp in Kabul February 18, 2015. REUTERS/Omar Sobhani (AFGHANISTAN - Tags: SPORT CRICKET)

Omar Sobhani/Reuters

Afghan families watch the live broadcast of the Cricket World Cup match between Afghanistan and Bangladesh at a refugee camp in Kabul on Wednesday.

The zodiacal light...epa04625060 The zodiacal light (L) and the Milky Way (R) are seen from the region of Salgotarjan, 109 kms northeast of Budapest, Hungary, 17 February 2015. The Zodiacal light, a cone-shaped shine, visible above the western horizon after sunset, is caused by the sunshine refelected from the interplanetary dust particles of the zodiacal cloud. The phenomenon can be observed the best in February and March from the Northern Hemisphere.  EPA/PETER KOMKA HUNGARY OUT

Peter Komka/EPA

Zodiacal light (L) and the Milky Way (R) as seen from Salgótarján, 109km northeast of Budapest, Hungary. The cone-shaped light is caused by sunshine reflected from dust particles of the zodiacal cloud. The phenomenon can be observed the best in February and March 

A cameraman films as Russian aerobatic team Yakovlev performs at the inaugural function of Aero India 2015 at Yelahanka air base in Bangalore, India, Wednesday, Feb. 18, 2015. Aviation companies from around the world are participating in the five-day event which runs through Feb. 22. (AP Photo/Aijaz Rahi)

Aijaz Rahi/AP

A cameraman films as Russian aerobatic team Yakovlev performs at the inaugural function of Aero India 2015 at Yelahanka air base in Bangalore. Aviation companies from around the world are participating in the five-day event that runs through Feb 22 

Gilles of Binche parade, a UNESCO World Heritage event, is the biggest and the liveliest annual carnival in Belgium.

Yves Herman/Reuters

Gilles of Binche parade, a UNESCO World Heritage event, is the biggest and the liveliest annual carnival in Belgium.