As the turmoil in world energy markets continues, U.S. politicians of both parties need to remember that oil is not just another commodity. Access to oil has been a preoccupation of military planners and world leaders since 1914, when Winston Churchill, as first lord of the admiralty, converted the British naval fleet from coal. Concerns about oil supplies, limited by an American embargo, contributed to Japan’s ruinous decision to attack the U.S. in 1941. And it was need for oil that drove Hitler to send the Wehrmacht to the Caucasus, leaving his overstretched and undersupplied forces to face the Red Army’s wrath in Stalingrad….

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