On another point, what does the OSCE say about Russian forces in Ukraine? What have they said over the past years?
As far as I recall, their answer was no regular Russian military units were operating there.
Reminds me of Poroshenko, bleating about thousands of Russian tanks operating there. He seemed to not know what such an operation would look like.
The Minsk agreements don't place any requirements on Russia, apart from assuring that the Donbas republics do their part.