It is now a truism that political leaders don’t initiate wars with the expectation that they will be protracted contests of attrition. It is an interesting counter-factual conjecture whether Russian President Vladimir Putin, if he had a crystal ball two or three years into the war in Ukraine, would have still started his war, even without evidence of his defeat. John Mearsheimer, in his 1984 Conventional Deterrence, has a slew of case studies where failed blitzkrieg offensives transformed themselves into intractable slogs.