You know, for all the bitching leftists do about the Vietnam war and Richard Nixon, you'd think they'd thank him for getting the U.S. out of Vietnam.
No, they'll never say thank you because it would mean they would have face the fact that they got us into that war in the first place.
King is saying that the best way to measure Iraqi support for our point of view is to watch the performance of the police and army we train...and by that measure support is low.