Indian military personnel prepare to march as they rehearse for the forthcoming Republic Day parade at Rajpath in New Delhi on January 3, 2017. India will celebrate its 68th Republic Day on January 26 with a large military parade.  / AFP / CHANDAN KHANNA        (Photo credit should read CHANDAN KHANNA/AFP/Getty Images) *** BESTPIX ***

Chandan Khanna/AFP/Getty

Indian military personnel prepare to march as they rehearse for the forthcoming Republic Day parade at Rajpath in New Delhi. India will celebrate its 68th Republic Day on 26 January with a large military parade. Photo Chandan Khanna/AFP/Getty 

A Chinese man wearing a protection mask takes a selfie against a portrait of Mao Zedong on Tiananmen Gate in Beijing as the capital of China is blanketed by heavy smog on Wednesday, Jan. 4, 2017. China has long faced some of the worst air pollution in the world, blamed on its reliance of coal for energy and factory production, as well as a surplus of older, less efficient cars on its roads. Inadequate controls on industry and lax enforcement of standards have worsened the pollution problem. (AP Photo/Andy Wong)

Andy Wong/AP

A Chinese man wearing a protection mask takes a selfie against a portrait of Mao Zedong on Tiananmen Gate in Beijing as the capital of China is blanketed by heavy smog. Photo Andy Wong/AP

Child guests of a U.S. House member take their seats in the House chamber for the ceremonial first day of the new session of Congress in Washington, U.S. January 3, 2017. REUTERS/Jonathan Ernst

Jonathan Ernst/Reuters

Child guests of a U.S. House member take their seats in the House chamber for the ceremonial first day of the new session of Congress in Washington, U.S. Photo Jonathan Ernst/Reuters

Seagulls fly above Lake Annecy in the town of Annecy, France, 01 January 2017 (issued 03 January). Annecy is a town in the Rhone-Alpes region of southeastern France. It is a popular tourist destination with many castles and cathedrals. It lies on the northern tip of Lake Annecy.  EPA/ROMAN PILIPEY

Roman Pilipey/EPA

Seagulls fly above Lake Annecy in the town of Annecy, France. Annecy is a town in the Rhone-Alpes region of southeastern France. It is a popular tourist destination with many castles and cathedrals. Photo Roman Pilipey/EPA 

Ski Jumping - 65th four-hills ski jumping tournament trial round - Innsbruck - 03/01/2017 -  Germany's Karl Geiger soars through the air.  REUTERS/Dominik Ebenbichler

Dominik Ebenbichler/Reuters

Germany’s Karl Geiger soars through the air during the trial round of the 65th four-hills ski jumping tournament in Innsbruck. Photo Dominik Ebenbichler/Reuters 

A migrant's feet peeks out of thermal blankets onboard the former fishing trawler Golfo Azzurro after being rescued along with other migrants, including children and pregnant women, by the Spanish NGO Proactiva Open Arms from a raft that drifted out of control in the central Mediterranean Sea, some 36 nautical miles off the Libyan coast, January 3, 2017. REUTERS/Yannis Behrakis

Yannis Behrakis/Reuters

A migrant’s feet peeks out of thermal blankets onboard the former fishing trawler Golfo Azzurro after being rescued along with other migrants, including children and pregnant women, by the Spanish NGO Proactiva Open Arms from a raft that drifted out of control in the central Mediterranean Sea. Photo Yannis Behrakis/Reuters 

A man decorates a Christian neighborhood ahead of Christmas celebrations in Islamabad

Faisal Mahmood/Reuters

A man decorates a Christian neighbourhood ahead of Christmas celebrations in Islamabad. Photo Faisal Mahmood/Reuters 

ungarian Artist Miklos Zoltan Baji performs a shamanic ritual around a bonfire during winter solstice celebrations in Bekescsaba, 200 kms southeast of Budapest, Hungary, Wednesday, Dec 21, 2016, on the shortest day of the year. (Peter Lehoczky/MTI via AP)

Peter Lehoczky/MTI/AP

Hungarian Artist Miklos Zoltan Baji performs a shamanic ritual around a bonfire during winter solstice celebrations in Bekescsaba Hungary. Photo Peter Lehoczky/MTI via AP) 

A wounded Iraqi child who was injured during the ongoing fighting between Iraqi forces and jihadists of the Islamic State (IS) group in Mosul, receives medical treatment at a hospital in Arbil, the capital of Iraqs autonomous Kurdistan region, on December 19, 2016. The hospital in Arbil is sometimes receiving more than 25-30 new patients a day and the small hospital is struggling to cope, they have no more space, a cheif nurse at the emergency clinic said.

Safin Hamed/AFP/Getty

A wounded Iraqi child who was injured during the ongoing fighting between Iraqi forces and jihadists of the Islamic State group in Mosul, receives medical treatment at a hospital in Arbil. Photo Safin Hamed/AFP/Getty 

 Children play near houses inundated by floodwaters after heavy rains in the Rangae district of the southern province of Narathiwat on December 21, 2016. / AFP PHOTO / MADAREE TOHLALAMADAREE TOHLALA/AFP/Getty Images

Madaree Tohlala/AFP/Getty

Children play near houses inundated by floodwaters after heavy rains in the Rangae district of the southern province of Narathiwat, Thailand. Photo Madaree Tohlala/AFP/Getty

 Druids, pagans and revellers gather in the centre of Stonehenge as they take part in a winter solstice ceremony at the ancient neolithic monument of Stonehenge near Amesbury on December 21, 2016 in Wiltshire, England. Despite a forecast for cloud and rain, a large crowd gathered at the famous historic stone circle, a UNESCO listed ancient monument, to celebrate the sunrise closest to the Winter Solstice, the shortest day of the year. The event is claimed to be more important in the pagan calendar than the summer solstice, because it marks the 're-birth' of the Sun for the New Year.  (Photo by Matt Cardy/Getty Images)

Matt Cardy/Getty

Druids, pagans and revellers gather in the centre of Stonehenge as they take part in a winter solstice ceremony at the ancient neolithic monument of Stonehenge near Amesbury Wiltshire, England. Photo Matt Cardy/Getty

Berlin mayor Michael Mueller, German Chancellor Angela Merkel and German interior minister Thomas de Maiziere stand in silence at the Christmas market in Berlin, Germany, December 20, 2016, one day after a truck ploughed into a crowded Christmas market in the German capital.

Hannibal Hanschke/Reuters

Berlin mayor Michael Mueller, German Chancellor Angela Merkel and German interior minister Thomas de Maiziere stand in silence at the Christmas market in Berlin, Germany one day after a truck ploughed into a crowded Christmas market in the German capital. Photo Hannibal Hanschke/Reuters 

A trail of devastation is left behind in Berlin, Germany, Tuesday, Dec. 20, 2016, the day after a truck ran into a crowded Christmas market and killed several people. (AP Photo/Markus Schreiber)

Markus Schreiber/AP

A trail of devastation is left behind in Berlin, German the day after a truck ran into a crowded Christmas market and killed several people. Photo Markus Schreiber/AP 

People enjoy skating at the open air Christmas ice rink on the first floor of the Eiffel Tower after its reopening on December 19, 2016 in Paris. The ice rink of about 200 square metres and on the first floor of the tower (57 metres above the ground) is open to the public until February 19, 2017. / AFP PHOTO / JOEL SAGETJOEL SAGET/AFP/Getty Images

Joel Saget/AFP/Getty

People enjoy skating at the open air Christmas ice rink on the first floor of the Eiffel Tower. Photo Joel Saget/AFP/Getty 

A man cooks in open air as heavy smog blankets Shengfang, in Hebei province, on an extremely polluted day with red alert issued, China December 19, 2016. REUTERS/Damir Sagolj

Damir Sagolj/Reuters

A man cooks outside as heavy smog blankets Shengfang on an extremely polluted day in China. Photo Damir Sagolj/Reuters 

Women and children stand on a street of the Mombele neighborhood in Kinshasa on December 19, 2016, as tensions rose with one day left of Congolese President's mandate. Joseph Kabila's second term ends on December 20 but he has shown no sign of stepping down and mediation talks have failed, sparking fears of fresh political violence in the mineral-rich but unstable Democratic Republic of Congo. / AFP PHOTO / Eduardo SOTERASEDUARDO SOTERAS/AFP/Getty Images

Eduardov Soteras/AFP/Getty

Women and children stand on a street of the Mombele neighbourhood in Kinshasa as tensions rose with one day left of Congolese President Joseph Kabila’s mandate. Photo Eduardov Soteras/AFP/Getty 

Donald Trump protestors demonstrate outside the Pennsylvania Capitol Building before electors arrive to cast their votes from the election at December 19, 2016 in Harrisburg, Pennsylvania.  Electors from all 50 states cast votes today in their respective state capitols.  Donald J. Trump won Pennsylvania by less than 1%, the first Republican to carry the state since George H.W. Bush 1992.  (Photo by Mark Makela/Getty Images)

Mark Makela/Getty

Donald Trump protestors demonstrate outside the Pennsylvania Capitol Building before electors arrive to cast their votes from the election in Harrisburg, Pennsylvania. Electors from all 50 states cast votes today in their respective state capitols. Donald J. Trump won Pennsylvania by less than 1%, the first Republican to carry the state since George H.W. Bush 1992. Photo by Mark Makela/Getty

The scene at Whitley Bay in Northumberland just before sunrise this morning. PRESS ASSOCIATION Photo. Picture date: Monday December 19, 2016. Photo credit should read: Owen Humohreys/PA Wire

Owen Humphreys/PA

The scene at Whitley Bay in Northumberland just before sunrise on Monday. Photo Owen Humphreys/PA 

Journalists take pictures during a news conference of German Economy Minister Sigmar Gabriel in Berlin Germany, December 19, 2016

Fabrizio Bensch/Reuters

Journalists take pictures during a news conference of German Economy Minister Sigmar Gabriel in Berlin, Germany. Photo Fabrizio Bensch/Reuters 

 Somali security forces patrol along the coast of Qaw, in Puntland, northeastern Somalia on December, 18, 2016. Armed militants groups have become more active in the Puntland's region, northern Somalia, since being pushed out of their strongholds in southern Somalia by African Union forces and the Somali National Army. / AFP PHOTO / Mohamed ABDIWAHABMOHAMED ABDIWAHAB/AFP/Getty Images

Mohamed Abdiwahab/AFP

Somali security forces patrol along the coast of Qaw, in Puntland, northeastern Somalia. Photo Mohamed Abdiwahab/AFP