Are we winning yet?

Guess not.

The explosion that killed 14 marines in Haditha yesterday was powerful enough to flip the 25-ton amphibious assault vehicle they were riding in, in keeping with an increasingly deadly trend, American military officers say.

In recent months the roadside bombs favored by insurgents in Iraq have grown significantly in size and sophistication, the officers say, adding to their deadliness and defeating efforts to increase troops' safety by adding armor to vehicles....

"This was a catastrophic event," said Sgt. Jason Knapp, an Air Force bomb technician who arrived at the scene of the multiple attacks the next morning. He found a foot from one of the American soldiers in the shallow water of a nearby canal. "It was pretty disturbing," he said.

Military personnel involved said the attack last month indicated to them that a new and deadly bomb-making cell singling out American patrols was operating near the large allied military base at the airport, an area that two officers said had seen little insurgent activity in months.