Thinking About the Unthinkable in Ukraine

As the war in Ukraine rages on, Russian President Vladimir Putin has engaged in nuclear saber rattling. “Whoever tries to impede us, let alone create threats for our country and its people, must know that the Russian response will be immediate and lead to the consequences you have never seen in history,” Putin declared in February in the first of many statements warning of a potential nuclear strike. For the most part, Western observers have dismissed this talk as idle chest-thumping. After all, whichever side fired nuclear weapons first would be taking a very risky gamble: betting that its opponent