Yes, but the tanks and artillery the "separatists" keep popping up with are coming from somewhere. At this late stage in the game, they certainly aren't Ukrainian remnants that the separatists have captured in those Ukrainian territories - those were used and destroyed many months ago.
So one of two things are happening. Either Putin and friends are blatantly lying and calling for peace talks and negotiations while they are pouring heavy military equipment into Ukraine, or Putin has no control over his military and anybody can just hop in one of his tanks and leave Russia in it. Either way, he looks like a fool with such obvious blatant lies, or due to his weakness as a military leader. I think we know which of those two is more likely.
Oh, and everyone seems to have quickly forgotten all the civilians that died on a passenger jet because of Russia's antiaircraft missiles. It blows my mind in this day and age that a country that is supposedly a big part of the world community can get by with shooting down a plane and the rest of the world does absolutely nothing about it.