DUBAI - Saudi Arabia has agreed to admit an Iranian diplomat to head an office representing Iranian interests in the kingdom, the official Iranian news agency IRNA reported on Sunday, in a rare move after the two rivals broke relations in 2016. 'An informed diplomatic source said Sunday that Saudi Arabia had agreed to grant a visa to the head ... of Iran's interests section,' IRNA reported. 'Observers saw this... as a positive diplomatic step in the Tehran-Riyadh relations.' The office is expected to be set up within the Swiss diplomatic mission in Saudi Arabia, based on an agreement signed in 2017.