Self-explanatory, really:

All the while those trillions of dollars of military spending act as an implicit subsidy on oil, and while the global oil trade is subsidised it is very difficult for any cleaner or more sustainable or more decentralised alternatives to win on cost.

Effectively, American foreign policy is rigging the energy market, and that hurts America more than anyone else. A less interventionist foreign policy might raise oil costs just enough to allow a new alternative energy infrastructure (thorium, solar, synthetic oil) to develop — and save the American taxpayer and military the costs and horrors of endless energy wars.