The Return of Marco Polo's WorldBy: Robert D. Kaplan A bracing assessment of U. S. foreign policy and world disorder over the past two decades from the bestselling author of The Revenge of Geography and The Coming Anarchy [Kaplan] has emerged not only as an eloquent defender of foreign policy realism but as a grand strategist to whom the Pentagon turns for a tour dhorizon.The Wall Street Journal In the late thirteenth century, Marco Polo began a decades long trek from Venice to