Putin made another threat. He seems almost desperate to widen this conflict. Ensnare other countries to commit blood and treasure.
He said that helping Ukraine is a declaration of war on Russia. That suggests the little help Ukraine is getting might be having the desired effect.
He also suggested that sanctions are also a declaration of war, meaning that those are also working.
At the rate his planes are being brought down Russia might declare a self-imposed no-fly zone

.
Either way, the level of brutality and attacks on civilians is directly proportional to the shocking impotence - against even the worst expectations - of the Russians.