Iran's Supreme Leader Ayatollah Ali Khamenei is saying the fate of a historic nuclear deal with world powers is still unclear as lawmakers in both the Islamic Republic and the U.S. review it.

Referring to the U.S., Khamenei said: "In their understanding of the deal, of which its fate is not clear since it is not clear if will be approved here or there, their intention was to find a way to penetrate into the country."

The remarks by Khamenei, who has final say on all state matters in Iran, suggests he supports politicians' role in approving the deal.

Khamenei has not publicly approved or disapproved the deal, though he repeatedly offered words of support for Iran's nuclear negotiators.

Khamenei was quoted Monday by his official website.