From a New York Times column by Thomas L. Friedman headlined “Free Advice for Putin: ‘Make Peace, You Fool'”:

As Vladimir Putin embarks on his Plan B — a massive military operation to try to grab at least a small bite of eastern Ukraine to justify his misbegotten war — I thought: Who could give him the best advice right now? I settled on one of America’s premier teachers of grand strategy, John Arquilla, who recently retired as a distinguished professor of defense analysis at the U.S. Naval Postgraduate School. When I called Arquilla and asked him what he’d tell Putin today, he didn’t hesitate: “I would say, ‘Make peace, you fool.’”