Members of the Kurdish internal security forces (known as the Asayish) check vehicles on December 16, 2015 in the northeastern Syrian city of Qamishli as tensions rose between regime forces and Kurdish fighter in the city, including a rare exchange of fire between the two typically-collaborative sides. AFP PHOTO / DELIL SOULEIMAN / AFP / DELIL SOULEIMAN (Photo credit should read DELIL SOULEIMAN/AFP/Getty Images)
