The limits of energy independence

EVEN WHEN American policy in the Middle East has been about more than oil, it has been about oil. That has sometimes been jarringly obvious, as when Dwight Eisenhower justified his decision to send troops to the region in 1958 on the basis that it was the “birthplace of three great religions”, as well as having “two-thirds of the presently known oil deposits”. At other times the oiliness of America’s policy has been more subtle, or partial. George W. Bush invaded Iraq in 2003 for several reasons: to secure its weapons of mass destruction, to spread democracy, and, his would-be successor John McCain acknowledged, to guarantee America’s oil supply.