Violence continues in Iraq

A truck bomber attacked a revered Shiite shrine in the heart of Baghdad on Tuesday, killing at least 78 people and wounding more than 200 in a resumption of Iraq's relentless sectarian slaughter. It was the second worst bombing in Baghdad since US and Iraqi forces launched a crackdown in February in the capital aimed at halting Iraq's spiral into all-out sectarian civil war. A car bomb on April 18 killed 140 near a Baghdad market.