Not everyone in Ukraine's military is sympathetic to the fascist Junta that seized power. Many of them, particularly in the east voted for Yanukovich and probably turned a blind eye when weapons disappeared from armories they were guarding.
“Good thing the Ukrainians left a major arms stockpile unlocked and unguarded for them then, right?”
Pretty much, that is exactly what happened. Google it, there are many articles about it from March.
Also, don’t forget the the Slavyansk group also got the weapons and APC’s of a Ukrainian Airborne Brigade that surrendered to the Rebels, including a TOW APC, an AA Missile APC, and a Truck-Mounted AA Gun.
Ok, I'll bite. What form of government does Russia have?
How many times now have we seen this asserted in this same thread? Tell me troll, is the Interim government of Ukraine the very same that was democratically elected in 2012, yes or no?