On June 21, Iranians woke up to the news that Mohammed bin Salman, a man notorious in Tehran for his anti-Iran remarks, had been appointed crown prince of Saudi Arabia, replacing Mohammed bin Nayef.
Since King Salman bin Abdul-Aziz Al Saud ascended to the throne, Iran and Saudi Arabia’s relationship has deteriorated, and many in Iran see the new crown prince — the king's son — as the architect of Saudi Arabia’s offense-minded foreign policy in recent years. This policy has included unanticipated moves such as the war on Yemen and siege on Qatar.