On March 9, 2022, PONARS-Eurasia published Kimberly Marten’s latest policy memo titled, “President Putin’s Rationality and Escalation in Russia’s Invasion of Ukraine.” In the memo, Marten discusses Putin’s rationality, why he is unlikely to escalate his invasion either on to NATO territory or up to use of nuclear weapons, and why we need to focus on miscalculation and inadvertent escalation instead. You can read it here.