Performers from the United States sing and dance during a Christmas day concert for U.S. military personnel at Bagram Airfield, north of Kabul, December 25, 2014. REUTERS/Mohammad Ismail (AFGHANISTAN ... more 
Performers from the United States sing and dance during a Christmas day concert for U.S. military personnel at Bagram Airfield, north of Kabul, December 25, 2014. REUTERS/Mohammad Ismail (AFGHANISTAN - Tags: RELIGION MILITARY) less 
1 / 30
Reuters | Photo By MOHAMMAD ISMAIL / REUTERS
Thu, Dec 25, 2014 8:27 AM EST