Makes you wonder about a huge financial aid strategy to win a war more effectively would work .. Ok I doubt the 'Allies' in the war against Iraq guessed it would cost so much but even so.
Once the initial military opposition was removed and government deposed - to throw more money at rebuilding and improving services/infrastructure etc rather than over-police (obviously you will need some responsive force there) to win the populace over?
To quote Monty Python.'What have the Romans ever done for us?'