The letter reportedly went to Mohsen Rezaei, secretary of Iran's Supreme National Security Council, who led the Islamic Revolutionary Guard Corps (IRGC) for longer than anyone else. Vance reportedly sent a letter to Iran's top security official Mohsen Rezaei in an attempt to revive peace. US vice president JD Vance has opened a direct channel to one of Iran’s most powerful hard-liners in an attempt to revive peace negotiations according to a.