"Iraq at one time was actually a functioning government. It's a real state. Afghanistan is not Iraq. It's tribal. It's got a different - a number of different sects, never really had a solid government there running the country on any kind of a continuing basis. Well, to rebuild the nation of Afghanistan is going to be more difficult than rebuilding the nation of Iraq."

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Every time we have come to the end of a conflict, somehow we have persuaded ourselves that the nature of mankind and the nature of the world have changed on an enduring basis and so we have dismantle our military and intelligence capabilities. My hope is that as we wind down in Iraq and whatever the level of our commitment in Afghanistan, that we not forget the basic nature of humankind has not changed.

— Robert M. Gates