The U.S. military has accused Russia of engaging in unsafe and unprofessional behavior towards U.S. Air Force drones over Syria. On Thursday, July 25th, two Russian fighter jets flew dangerously close to Reaper drones carrying out an operation against Islamic State targets. This is the second instance of such behavior in two days and is likely to be a source of tension between the two countries. The U.S. has expressed concern and urged Russia to respect the safety of coalition forces operating in the region.