The US officials are saying [the $300bn] will actually be, in effect, paid for by the Iranian neighbours; the example was given off them building factories within Iran.
The US involvement would be to grant licences and to give an overall approval of any such project. So, in other words, the US would be in a controlling role.
But as to that issue of reparations as well. That is an issue that certainly is going to raise much controversy within the United States. That is effectively being staggered and is, say US officials, dependent on Iranian compliance with the memorandum of understanding and compliance in the negotiations as they go along.
It also links the reparations to the whole nuclear issue, seeing sanctions and reparations being dependent on progress made in those nuclear talks.
There are a lot of issues here. The US administration officials are very quick to say this is nothing like they claim the deal done by Obama, and they also point out this is not a deal; this is a memorandum of understanding.