There is propaganda suggesting that we can't pull out immediately. If there was will to do it, it could be done without the casualties that the leading "pundits" say would be there.

Otherwise we have "military excuses" for not disengaging in a fruitless occupation.

The longer we stay, the more casualties there will be as evidenced by the longest
occupation in the history of the US.

Any casualties would be minimal compared to what happens if the US stays in Iraq.