1. Why Russia will lose this war?https://t.co/Rpis71w92L
— Kamil Galeev (@kamilkazani) February 28, 2022
TL;DR Russian army is overrated, Ukrainian army underrated. Putin expected Ukrainians to surrender. Thus he sent only one echelon of troops, that's not a proper Blitzkrieg. He didn't expect any resistance and thus failed