" What does it mean to invade a country, topple its leader, face a raging insurgency, open a Pandora’s box of sectarian conflict across a region, spend trillions of dollars, kill hundreds of thousands of people, and permanently alter hundreds of thousands of American lives? Something in the character of post-9/11 America seemed unable, or unwilling, to process the scale of the catastrophic decision, and the spillover effects it had—an emboldened Iran, embattled Gulf states, a Syrian dictator who didn’t want to be next, a Russian “strongman who resented American dominance, a terrorist organization that would turn itself into an Islamic State, and all the individual human beings caught in between. "

― Ben Rhodes , The World As It Is: Inside the Obama White House