A senior British military source told IHS Jane’s that Russia has been flying A-50 AEW&C surveillance flights over Syria since late December.
By: Alexey Reznichenko (http://russianplanes.net/id174408) [CC BY-SA 3.0 or CC BY-SA 3.0], via Wikimedia Commons
[thumb]http://www.janes.com/article/57105/russia-operates-mainstay-aew-cs-over-syria[/thumb]