At the end of March, oil posted its fifth consecutive quarterly price increase: It's now solidly above $80 per barrel. If it reaches $125 a barrel again, as it did in 2008, then approximately half the wealth in the world—above and below ground—will be controlled by OPEC nations.
Oil dominates transportation: About 95% of transportation fuel in the U.S. is derived from petroleum. And over three-quarters of the world's reserves of conventional oil are in OPEC nations. But OPEC is pumping less than it did in the 1970s, despite a doubling in global demand, because it's a cartel maximizing its income. OPEC sets oil's price at a level that exploits our addiction but is generally not high enough for long enough that we go cold turkey.
Oil profits enhance the ability of dictators and autocrats to dominate their people. This is one reason that eight of the top nine oil exporters (Norway is the exception) are dictatorships or autocratic kingdoms, as are virtually all of the 22 states that depend on oil and gas for at least two-thirds of their exports.