source https://www.wsj.com/articles/ukraines-lack-of-weaponry-and-training-risks-stalemate-in-fight-with-russia-f51ecf9

I also don't know why they keep saying it's going to be a stalemate, Russia is already taking kilometres on the north which is more than Ukraine managed to take during the whole two months now.

Once the offensive burns itself out, it's almost certain that Russia will start a serious offensive of their own.