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Thanks, everyone for your varied and interesting views. Personally, I think we should bring our troops home from both countries. The taliban and Osama will claim victory, of course, but we will have to live with that.
No country, or group of countries, should try to force democracy on another; that change to democracy, if a large enough number of people want it, will only come through internal struggle. Yes, there will be a lot of bloodshed, but that is part of a revolution.
With our troops home we will be in a better position to defend this country and its borders from internal as well as external attack by thos ewho want to destroy OUR way of life.