clipped from: thomaspmbarnett.com   

The key in Nov 04-Nov 06-Nov 08 comparison: US troop deaths drop from 137 to 69 to 12.

That decline effectively kills anti-intervention sentiment and protest--along with news coverage.

Casualties--as in, American casualties drives coverage.

In the end, the public cares about our losses a lot more than the rationale or strategic role America attempts to play in any intervention.