Iranian Foreign Minister Hossein Amir-Abdollahian is in Saudi Arabia for an official visit, It is the latest sign of improved relations between the two regional rivals since the resumption of diplomatic ties in March. A Chinese-brokered deal announced in March saw the long-time rivals agreeing to reestablish relations. Since then, Saudi Foreign Minister Prince Faisal bin Farhan visited Iran. Iran and Saudi Arabia have backed opposing sides in conflicts across the Middle East, including Yemen, Syria and Lebanon. Has ChinaUnited the middle east ?