Thank you.
You talked about national interests, and I think you quite rightly said that national interests really don't change, but as we get into a mission that we have been in for seven, eight, nine, or ten years, obviously the mission will change, because frankly the enemy has a vote in that. I would like your view--and you may have stated it already--on the importance of our maintaining flexibility not in terms of national interests, but in how we react to what the enemy is doing as the situation evolves.