BAGHDAD, August 28, SPA -- Hundreds of U.S. and Iraqi forces backed by helicopters and jet fighters attacked and killed 33 insurgents who were holding back the water supply to the town of Khalis, the American command said in a statement Tuesday. The assault began before dawn on Monday when a joint forcewas landed by helicopter in the village of Gubbiya, 15kilometers (10 miles) east of Khalis. The assault forcekilled 13 fighters and attack aircraft killed 20 others,the military was quoted as saying by the Associated Press.--SPA www.spa.gov.sa/478022