I wish I knew how to tell. In game theory there are games that the crazy person wins. "Chicken" is the most famous. If both players are crazy, both lose. Unfor

I wish I knew how to tell. In game theory there are games that the crazy person wins. "Chicken" is the most famous. If both players are crazy, both lose. Unfortunately the discipline offers no way of diagnosing insanity. Committing to what looks like a crazy plan can be rational. Putin's speech on Monday certainly seemed unhinged, but he might be a good actor.