Paul Krugman: Marches of Folly, From Iraq to the Deficit

Ten years ago, America invaded Iraq; somehow, our political class decided that we should respond
to a terrorist attack by making war on a regime that, however vile, had nothing to do with that
attack.

Some voices warned that we were making a terrible mistake — that the case for war was weak and
possibly fraudulent, and that far from yielding the promised easy victory, the venture was all too
likely to end in costly grief. And those warnings were, of course, right.