Simferopol, Crimea (CNN) -- Is Russian President Vladimir Putin an opportunist, grabbing at chances to poke the West in the eye, or a clever strategist with the longer-term goal of restoring a greater Russia? Is he simply riding a tide of Russian patriotic fervor over Crimea? Is he a rational actor aware of the delicate balances within the international system, or as one observer put it, "drunk on power" and oblivious to sanctions? These are the questions preoccupying western governments and Russia's neighbors, after the swift annexation of Crimea and Russian military maneuvers close to the Ukrainian border. There were...