At a certain level, credible deterrence depends on a credible enemy. The Soviet Union disintegrated, but the surviving superpower's instinct to de-escalate intensified: In Kirkuk as in Kandahar, every Lilliputian warlord quickly grasped that you could provoke the infidel Gulliver with relative impunity. Mutually assured destruction had curdled into Massively Applied Desultoriness. Clearly, if one nation is responsible for near half the world's military budget, a lot of others aren't pulling their weight. The Pentagon outspends the Chinese, British, French, Russian, Japanese, German, Saudi, Indian, Italian, South Korean, Brazilian, Canadian, Australian, Spanish, Turkish, and Israeli militaries combined. So why doesn't it feel like that? Well, for exactly that reason: If you outspend every serious rival combined, you're obviously something other than the soldiery of a conventional nation state. But what exactly? The geopolitical sugar daddy is so busy picking up the tab for the global order he's lost all sense of national interest.