"When you're responsible for half the planet's military spending, and 80 percent of its military R&D, certain things can be said with confidence: No one is going to get into a nuclear war with the United States, or a large-scale tank battle, or even a dogfight. You're the Microsoft, the Standard Oil of conventional warfare: Were they interested in competing in this field, second-tier military powers would probably have filed an antitrust suit with the Department of Justice by now. When you're the only guy in town with a tennis racket, don't be surprised if no one wants to join you on center court--or that provocateurs look for other fields on which to play. If you've got uniformed infantryman and tanks and battleships and jet fighters, you're too weak to take on the hyperpower. But, if you've got illiterate goatherds with string and hacksaws and fertilizer, you can tie him down for a decade. An IED is an "improvised" explosive device. Can we still improvise? Or does the planet's most lavishly funded military assume it has the luxury of declining to adapt to the world it's living in?"