U.S. forces patrolled the streets of the predominantly Shiite city of Balad on Tuesday after five days of sectarian slaughter killed 95 people, violence that surged out of control despite the efforts of Iraq’s best-trained soldiers. Iraq’s 4th Army took command of the region north of Baghdad a month ago, but had been unable to stem recent attacks in Balad, where the slayings of 17 Shiite Muslim workers on Friday set off revenge killings by Shiites. Full Story