The Asian Champions League games are made possible by the restoration of diplomatic relations between Iran and Saudi Arabia following an agreement brokered by China earlier this year. The longtime rivals had severed ties in 2016 after an angry crowd stormed Saudi diplomatic missions in Iran to protest Saudi Arabia’s execution of a popular Shiite cleric. The 2015 Asian Champions League edition was the last time Saudi and Iranian teams faced each other on home turf in the group stage or knockout rounds.
