Obama taking troops out of Iraq has nothing to do with world order.
Obama can take the troops out of Iraq and never consent to a world order. Also taking the troops out doesn't mean he is leaving any openings. He is just not going to let money and lives be wasted in Iraq.
Also you have no clue what he is going to do. Obama will protect the U.S. because that is what is asked of him as a president.
I personally dont agree with Bush going to war with Iraq in the first place but that is what he thought he has to do.
Now if Obama takes the troops out then that is what he feels needs to be done.