Iranian president Hassan Rouhani has suggested that the Islamic Republic could hold a referendum over the country’s nuclear program amid the unraveling deal with world powers and heightened tensions with the United States.

According to the official IRNA news agency, President Rouhani, who was last week publicly chastised by the country’s supreme leader, made the suggestion in a meeting with editors of major Iranian news outlets last evening.

Rouhani said he had previously suggested a referendum to Supreme Leader Ayatollah Ali Khamenei in 2004, when he was a senior nuclear negotiator for Iran.

At the time, Khamenei approved of the idea and though there was no referendum, such a vote can be a solution at any time, he added.

A referendum could provide political cover for the Iranian government if it chooses to increase its enrichment of uranium, prohibited under the 2015 deal with world powers.