David Frum, writing in today’s WSJ (subscription required): “In every war, there will be mistakes, often very grave ones. It’s essential to acknowledge mistakes and learn from them. But in this war, the Bush administration knew that any attempt to identify and fix errors would be savagely exploited by domestic opponents. Burdened by that knowledge, the administration has often succumbed to denial and intransigence when learning and improvement were most called for.”