Pipeline blast cuts Iraq's oil exports by 25 percent

Insurgents blasted an oil pipeline, setting off a huge blaze and slashing Iraq's daily oil exports by about 25 percent. U.S. troops traded gunfire Monday with fighters loyal to radical cleric Muqtada al-Sadr in this Shiite city south of Baghdad.

American tanks and helicopters destroyed al-Sadr's headquarters in the Baghdad neighborhood of Sadr City in weekend clashes. U.S. officials said 35 Iraqis were killed before fighting ended just before dawn Monday.