Has John Mearsheimer been frivolous in his analysis of the Russia-Ukraine War?

A critic of political scientist John Mearsheimer claims that "just over a week before Russian troops and armour rolled in, that 'Putin had no intention of invading Ukraine'." Was Über-Realist Mearsheimer really that clueless?

Full post: https://brucemillerca.substack.com/p/has-john-mearsheimer-been-frivolous