Russia Confirms S-400 SAM System For Donbass Region

The Ukrainian military is increasingly concerned that Russia is creating anti-access air zones in the Donbas region to keep Ukrainian aircraft from flying through the area, limiting Ukraine’s ability to support its ground forces. While U.S. officials believe that Russia’s progress in the region has been slow, the introduction of more Russian S-400 air defense batteries and drones, as well as low cloud cover in the region, has left Ukrainian pilots uniquely vulnerable.