WHY WAS INTEREST PAID?
The 1979 MoU stipulated that the unexpended funds would be placed in an interest-bearing account. As it turns out, these funds were not based in such an account—no U.S. administration implemented that requirement. The reasons for this are not clear. Former Undersecretary of Defense for Policy Eric Edelman, who testified on this issue before the Senate, noted that the United States “does not let [FMS accounts] accrue interest.”
Still, most if not all other claims before the Iran-U.S. Claims Tribunal have
incorporated compensation for accrued interest. This is consistent with the position adopted by the Treasury Department at the outset of the 1979 assets freeze, although in nearly every case the amount of the interest to be paid has been subject to some haggling between Washington and Tehran.
Obama administration officials maintain that a Tribunal decision may have resulted in a much larger judgment on the issue of accrued interest.
The Deal