Okay, I'll edit out any huge references to CSTO forces en masse, but the VDV are getting a mention- if that is okay.

NOTE- that has been done, I've got it done in such a way that the GM can go on to make what they want of the situation. So while CSTO is on the ground, it's limited as hell. A Crimea sort of situation- the CSTO forces are paradoxically, there and yet not there. There are unknown soldiers wearing Russian camoflage and AK-12s but no definitive proof that is CSTO. There are Polish vehicles seized on the move with Rebel markings manned by these Green Men, and it so happens that a VDV squad finds it wasn't able to quietly sneak it's way into being a part of that Green Man force, and that CSTO is potentially coming .