Where Nuclear Deterrence Fails in Ukraine

Note: Since this story will also appear in a couple foreign policy publications, I’ve omitted my usual self-amusing, “why-on-earth-does-he-do-this?” snark. Take as comfort that as sure as God is in his heaven (which I seriously doubt), it will be back next time).

A basic rule of human interaction is that whenever there is a stand-off, the side which fears possible consequences less has a…