The reliance of democracies on vital supplies of energy from distant and non-democratic sources is probably the most pressing and dangerous problem of modern times, but it is not a new phenomenon. Classical Athens, the birthplace of democracy and the largest and historically most important of the ancient Greek city-states, depended for its survival on the constant importation of grain from overseas lands as remote as Ukraine and southern Russia, and this trade was ultimately controlled by powerful politicians, wealthy landowners, and kings. Alfonso Moreno examines how this resource need...