A federal appeals court has revived a lawsuit against CACI International Inc by four former Iraqi detainees who claimed the U.S. defense contractor's employees directed their torture at the Abu Ghraib prison near Baghdad. The 4th U.S. Circuit Court of Appeals…said the claims had sufficient ties to the United States to be heard in U.S. courts. It said a lower court judge erred in concluding he lacked jurisdiction because the alleged abuses, dating from 2003 and 2004, occurred in Iraq…Monday's decision has the potential to expand legal liability for contractors who work with and undertake sensitive tasks on behalf of U.S. troops outside the country…