Perhaps the Russians are tired of this war and the oligarchs making money off it. The proles might have learned a few tricks from the Chechens about sabotage and terrorism.
There’s always hope that Russia will cease being savage, but I fear it’s in their nature from the way they’ve had to fend off attacks from others. However, defending yourself is much different from attacking peaceful neighbors.
This could easily be sabotage from within. Done by Russians.