In Lauren Yee's exuberant and stealthily devastating new comedy, "Mother Russia," history arrives not with a bang but with an order of fast food. Two young men, perched at the lip of a new world order, cradle their first-ever Filet-O-Fish sandwich from McDonald's as though it were a sacred relic. They tear into it with the devotional hunger of converts, pausing only to roll their eyes heavenward and lick tartar sauce…
