The Cradle report cited an unnamed Iranian source who said that the deal includes comprehensive sanctions relief for Iran and a series of measures meant to deter the US from withdrawing from the agreement in the future.

Iran has to shut down some centrifuges to bring its nuclear program back into the limits of the JCPOA. The source said that the centrifuges will be left in a state such that if the US pulls out of the deal again, the centrifuges could be restarted within a year.

"The platforms of the centrifuges will not be destroyed and their connections and electricity are collected, which brings our rebuildability to under one year and is a kind of guarantee," the source said.

The source said that altogether, there are 21 guarantees written into the deal to alleviate Iran's concerns about the US withdrawing from the agreement. Under one guarantee, if the US leaves the deal, there will be a three-year and one-month grace period during which foreign companies will be unaffected by sanctions.

It's not clear if any guarantees that are reliant on US action would be enforceable on a future administration. Since the JCPOA is not a treaty, the next administration will not be bound by the agreement, and that issue has been a significant factor in the talks between the US and Iran.