Iran will make no concessions on its nuclear program even if the United States accepts Tehran’s proposal to reopen the Strait of Hormuz, a senior Iranian official told Reuters on Friday.

The official, speaking on condition of anonymity, said Iran would give no ground on its rights, including enriching uranium or shipping its highly enriched uranium out of the country, one of Washington’s main demands.

Tehran has offered to reopen the blocked waterway as the centrepiece of a deal. Under the plan, Foreign Minister Abbas Araqchi said on Thursday, hostilities would end on all fronts, including Lebanon, within seven days. In return, the US would lift its naval blockade on Iranian ports, release Iran’s frozen funds and waive oil sanctions.

The official said the strait would stay closed until “all of Iran’s conditions are met” by the US, and detailed nuclear talks would only follow those conditions.

President Masoud Pezeshkian told journalists at the UN that he hoped for a deal to end the hostilities before the US midterm elections on November 3. The stance complicates diplomacy after seven months of war between Iran and the US, begun on February 28 with US and Israeli attacks.