Iran's parliament curtailed its own power to block a nuclear deal with world powers Sunday, effectively removing a longstanding threat that a final accord could be torn up by lawmakers.
A draft bill presented on Wednesday, which laid down strict criteria for Iran to accept any agreement, had threatened to complicate upcoming talks on the long-pursued deal, which are due to conclude on June 30.
However, in a boost to President Hassan Rouhani's government, key amendments to the proposed legislation will now move the formal oversight of a deal out of the hands of lawmakers.
The original text said parliament would have to ratify key criteria for an agreement to be binding but the amended bill instead gives the right of supervision to the country's Supreme National Security Council (SNSC).
The council comprises ministers, military commanders and handpicked appointees of Ayatollah Ali Khamenei, Iran's supreme leader who will have the final word on any agreement. The council is also chaired by Rouhani, who is pushing hard for the deal.
"Whatever decision the leader takes in this regard, we should obey in parliament," speaker Ali Larijani said after 199 MPs voted for the amendments in the 290-member chamber.
"We should not tie the hands of the leader," he added.
Only three lawmakers opposed the changes and five abstained, with six not voting and dozens more absent.
Although the sponsor of the original bill, Alaedin Boroujerdi, the chairman of parliament's national security and foreign policy committee, said it was designed to insulate Iran's negotiators from the West's "excessive demands", Larijani suggested otherwise.
"We want to help the country and not create new problems," he said, referring to the need to coordinate with the SNSC.
According to the official IRNA news agency Larijani earlier told Ahmad Tavakoli, a conservative MP critical of the bill being delayed: "We are not discussing the sale of potatoes, but an important issue for the country."
And IRNA later cited Rouhani as saying that "in the current situation, in order to advance the country and resolve its problems, we need to help each other more".
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- Roadblocks remain -
Iran and the P5+1 powers (Britain, China, France, Russia and the United States plus Germany) agreed the outlines of the nuclear deal on April 2 after intensive talks went past a March 31 deadline.
Major roadblocks that remain include the West's ability to enforce tighter inspections of Iran's nuclear sites and other facilities.
Iranian officials insist there can be no inspections of military sites and the legislation published on Sunday forbids access beyond "conventional supervision" of nuclear sites.
French Foreign Minister Laurent Fabius, on a visit Sunday to the Palestinian territories and Israel, said any nuclear deal with Iran "must be able to be verified".
"We think that we must be extremely firm and that, if an agreement is to be reached, that agreement must be robust," he added.
Any deal will still have to be rubber stamped by Tehran's parliament but it would be highly unlikely for lawmakers to oppose a text approved by the SNSC.
The bill stipulates the need to lift all sanctions imposed on Iran as punishment for its nuclear programme, under which leading states have suspected the Islamic republic of developing a bomb.
However, the altered draft law is now more specific and says sanctions need only be lifted "on the day Iran starts implementing its obligations", as opposed to "on the day of an agreement".
Officials in Tehran have pushed for the measures, mostly economic, to end immediately but in a sign of greater flexibility, Rouhani said on June 13 that "weeks or even months will pass" between signing and implementing the deal.
Iran has for years been faced with UN, EU and US sanctions that have ravaged its economy.
In a measure that mirrors that taken in Tehran, President Barack Obama has given US lawmakers 30 days to review a nuclear deal.
Iran denies its nuclear programme has military objectives, insisting it is for purely peaceful energy development purposes capable of reducing its reliance on fossil fuels.