We aren't talking about the Shah's money. We are talking about Iranian national assets that were seized by the US after the Hostage Crisis and not returned after we promised to do so.
What's the real story behind the settlement of a decades-old financial dispute between the United States and Iran?
www.brookings.edu
In 1982, Iran filed a claim with the Tribunal pertaining to the FMS Trust Fund, which Lisa Grosh, Assistant Legal Advisor at the Department of State, has described as “a multi-billion dollar breach-of-contract dispute covering 1,126 huge military sales contracts.”
Grosh stated that the two sides engaged in some 40 rounds of negotiations “at this level” over several decades. Iran ramped up efforts to adjudicate the claim in 2015, asking the Tribunal to schedule comprehensive hearings on the outstanding FMS claims and requesting a preliminary ruling. The
FMS Trust Fund amounted to $600 million until the George H. W. Bush administration returned $200 million to Iran in a partial settlement in 1990.
Who paid who? And how?
The settlement announced in January involved two parts: return of the $400 million principal and payment of $1.3 billion in interest.
To return the principal, the Treasury,
working with the Defense Finance and Accounting Service (DFAS) and the Federal Reserve Bank of New York, made a $400 million wire transfer from DFAS to the Swiss National Bank. The $400 million was then converted into Swiss francs and withdrawn in franc banknotes, which were transferred to Geneva. On January 17, the banknotes were
disbursed to an official from the Central Bank of Iran.