By chipping away at his base support.
In Iraq there have been a spate of suicide bombings, and most of the victims have been Iraqis.
This has led to a flood of local intelligence pouring into the Alliance security forces on the location of insurgents leading to the small local victories that are published on this very web site now and again.
In wars of this nature it is not what your enemy is doing that is of prime importance but what the effect is on the target population that both sides claim to represent
I know you guys (SAS)UK and such got it done in Malaysia. I hope we "reenforce success" and copy most of the methods and use them in Iraq.
I think the real target population for the jihadis is the U.S. electorate. They seek to break our will, and force us to submit. And they have almost succeeded.