A U.S. soldier dressed as Santa Claus waves to fellow troop son Christmas day at the U.S. air base in Bagram, north of Kabul, Afghanistan, Dec. 25, 2015.
Members of the ice swimming club "Berliner Seehunde" (Berlin Seals) take a dip in the Orankesee lake as part of their traditional Christmas swimming session in Berlin, Germany, Dec. 25, 2015.
Fireworks are reflected in the waters of the Yenisei River during a ceremony to open the city's Christmas and New Year tree in Krasnoyarsk, Russia, Dec. 25, 2015. Picture taken with long exposure.
People from Pakistani Christian community leave a local church after attending Christmas mass at a local church, under security, in Islamabad, Pakistan, Dec. 25, 2015.