Russia's Southern/Eastern offensive is already two weeks old and they have made almost imperceptible gains. This doesn't bode well for Russia. Every day, Ukraine becomes stronger, with more & better weapons, every day the Russian army depletes itself by attacking Ukrainian positions even if the Ukrainians need to withdraw to newly established positions. 45 days is about the limit before combat effectiveness declines rapidly. The Ukrainian army can rotate their people off the line even if for only short periods, 3-7 days. The Russians can't easily do that because, for one, they don't have that many people, & two, they have nowhere for them to go.
