Article content Earlier on Sunday the head of the chamber’s National Security Commission, Mojtaba Zolnour, said he was leading efforts to prevent the restoration of the nuclear agreement without full parliamentary approval and said lawmakers must be present in the Vienna meetings, the semi-official Tasnim news agency reported. The European Union will chair the talks in Vienna, where envoys are trying to synchronize a U.S. return to and Iranian compliance with the 2015 agreement. After Trump jettisoned the accord and unilaterally imposed punishing sanctions on Iran, Tehran’s government ramped up its nuclear capacity and production of enriched uranium.