Even if we decide to govern not by proxy but via the US military, we'll end up putting down various rebellions ad infinitum--until and unless we loose a Sherman-like campaign of annihilation on rebel areas. And that's just Iraq. The hawkish are clamoring for war on Iran, North Korea, plus Saudi Arabia and even China(!).
So how long will the US be able to keep annihilating, before a coalition rises against us?