Mohammed bin Salman Biden MBS
Saudi Crown Prince Mohammed bin Salman (L) and US President Joe Biden (R).
  • Iran and Saudi Arabia have agreed to restore diplomatic relations in a deal brokered by China.
  • A former US diplomat says the move is a "middle finger to Biden."
  • China and Iran are top US adversaries. The deal signals Beijing's rising influence in the region.

Saudi Arabia and Iran have restored ties with the help of China, agreeing to reopen embassies in their respective capitals, in a move that appears to signal the US's waning influence in the region.