Iraqi security forces will need an additional year to 18 months before they can take over from American troops, the top U.S. commander in Iraq, Army Gen. George W. Casey Jr., said Wednesday. The assessment, which came on a day when at least 79 people were killed or found dead across Iraq, drove home a growing realization that U.S. troops will stay longer and in greater numbers in Iraq than once anticipated by ground commanders and the Bush administration. Full Story