I have told since the very beginning that Ukraine is on her way to dictatorship.
Bring back SMERSH (Russian contraction - Death to Spies”)
Only an idiot would not implement some sort of internal security in the Ukrainian Armed Forces considering the facts on the ground. This is the type of thinking that calls for Gitmo to be closed down, and releases Jihadists back into the world.
Whole lot of Russian spies in the military, try to get them all and exchange them for the captive Ukrainian soldiers. Also, in this instance, having a large number of small battalions and a decentralized organizational structure appears to be an advantage as it’s less susceptible to spy infiltration.