http://www.nytimes.com/2010/08/29/wo...er=rss&emc=rss

BAGHDAD — Insurgents affiliated with Al Qaeda in Iraq claimed responsibility on Saturday for a wave of car bombings, roadside mines and hit-and-run attacks this week in at least 13 Iraqi cities and towns, a deadly and relentless campaign whose breadth surprised American military officials and dealt a blow to Iraq’s fledgling security forces.