It isn't hubris. Before the invasion western analysts were misled into believing Russian capabilities had or were near parity with modern western systems - one

It isn't hubris. Before the invasion western analysts were misled into believing Russian capabilities had or were near parity with modern western systems - one of the factors in the widespread assumption in western capitals on Feb 24, 2022 that Ukraine would fall in days. But Russian systems have mostly performed poorly in this war. Meanwhile Western systems have proven highly capable in all recent wars.