The U.S. military and defense contractor KBR are investigating possible human-rights abuses at a compound near the Baghdad airport where a Kuwaiti company [Najlaa International Catering Services] housed about 1,000 Asian men it recruited for jobs in Iraq that didn't materialize...KBR, a Texas contractor, is involved because it's managed Najlaa's work in Iraq...Staffan de Mistura, the United Nations' top envoy in Iraq…urged a quick return for the men living there "so that the suffering of these people… is rapidly brought to an end."...Najlaa officials have maintained that they took care of the men's basic needs while the company sought to match them with jobs. It moved to send them home after the reports from McClatchy and the Times of London.