Boris Bondarev says President Vladimir Putin of Russia could have spent the last two decades "developing the country” but instead turned it "into some kind of total horror, a threat to the world.”

Bondarev would know: He spent his career promoting Putin’s foreign policy.

A mid-level diplomat at Russia’s United Nations mission in Geneva, Bondarev on Monday became the most prominent Russian official to resign and publicly criticize the war in Ukraine since the invasion Feb. 24.