Opinion: Weakness is lethal. Why Putin invaded Ukraine and how the war must end

Editor’s Note: This is an analysis by Nataliya Bugayova, Kateryna Stepanenko, and Frederick W. Kagan for the Institute for the Study of War (ISW). This analysis was originally published by the ISW on Oct. 1, 2023, and has been republished by the Kyiv Independent with permission. Russian President Vladimir