Residents of Baghdad are sending the U.S. a bill. The government in the Iraqi capital wants Americans to ante up $1 billion to pay for damages. But here’s the twist: it’s not the bombs and shooting of the invasion that they say caused the damage, but the blast walls and military convoys the U.S. deployed to halt violence during the nation’s civil war. The concrete barriers have destroyed infrastructure including sewers and parks, while Humvees have wreaked havoc on the streets, making a once-beautiful city ugly, a spokesman says. It’s unclear what Baghdad might do if the U.S. doesn’t want to pay.