Oh, that's reassuring

U.S. unable to account for 16,000 kilograms of exported enriched uranium
"The United States could only account for 1,160 out of 17,500 kilograms of Highly-Enriched Uranium (HEU) -- weapon-usable nuclear material -- exported to 27 countries in response to a 1992 congressional mandate, according to a Government Accountability Office (GAO) report released last week."  The Raw Story