I cannot trust any news source in regards to Ukraine & Russia.
Russia only wanted part of Ukraine and stopped or Ukraine is putting up a stiffer defense than expected. Even saying that is pure speculation.
I DO belive Russia is hoping for assistance from an old and reliable ally.
Winter
It is quite possible that Europe may capitulate if the winter is harsh enough and people freeze.
Probably not. The Germans for one are doing quite well with their energy storage.