Read the 14-Point Draft Memorandum Between the US and Iran

That's what will doom this agreement:

"1. The Islamic Republic of Iran and the United States, together with their allies in the current war, declare upon the signing of this Memorandum of Understanding an immediate and permanent end to the war on all fronts, including Lebanon, and undertake that from now on they will not launch any hostile action against each other, and will refrain from the threat or use of force against each other. The final agreement will confirm the provisions of this Article and the remaining Articles.

1. The United States undertakes, together with its regional partners, to create a comprehensive plan agreed upon by both parties for the rehabilitation and economic development of the Islamic Republic of Iran, While ensuring financing of at least $300 billion. The implementation mechanism of this plan, as part of the final agreement, will be formulated within 60 days."

"with their allies in the current war"
"immediate and permanent end to the war on all fronts, including Lebanon"
"regional partners"

(cough) Israel (cough).