Strategy

As you read about the bridge and infrastructure bombings, remember that we fight a "thinking enemy."

The latest attack, a parked truck bomb, blew apart the bridge that carries traffic over the Diyala River in Baqouba, police said on condition they not be identified by name because they feared retribution. There were no casualties, but motorists and truckers now must use a road that runs through al-Qaida-controlled territory to reach important nearby cities.

Some of the earlier bridge bombings limited and altered access routes for the Shia militias into and around Baghdad. They're shaping the battlefield.