"There is a lot of money missing during the first American administration of Iraqi money in the first year of occupation.
"Iraq's development fund has lost around $18bn of Iraqi money in these operations - their location is unknown. Also missing are the documents of expenditure.
"I think it will be discussed soon. There should be an answer to where has Iraqi money gone."
The Los Angeles Times reported last week that Iraqi officials argue that the US government was supposed to safeguard the stash under a 2004 legal agreement it signed with Iraq, hence making Washington responsible for the cash that has disappeared.
Pentagon officials have contended for the last six years that they could account for the money if given enough time to track down the records.