If Ukraine can hold on for a month, it is Putin who is in peril. I think Putin knows this.
Russia controls most of the eastern Ukraine. By the end of next week they will control Kiev, and we will see if Moldovia is next.
I am not sure if Putin is in trouble or not, but I do not believe the propaganda being played out in our media and news Notice how all the Ukrainian victories are in the west, and nothing out of the east.