Ambushes and bomb attacks jolted central and northern Iraq on Wednesday as insurgents pressed a campaign against American and Iraqi forces after the American-led offensive that left swaths of Falluja in ruins. The violence flared in cities across the Sunni triangle, from Ramadi to Bayji to Kirkuk, though guerrillas largely stayed off the streets of the inflamed city of Mosul on the second day of an American sweep there. At least 21 Iraqis were killed and dozens wounded in the wave of attacks on Wednesday.Full Story