LUDOVIC MARIN/POOL/AFP via Getty Images)
- Saudi Arabia's Crown Prince Mohammed bin Salman was interviewed on Fox News.
- He said if Iran gets a nuclear weapon, Saudi Arabia will need one too.
- Biden is trying to restart the 2015 Iran deal amid fears of an arms race in the region.
Saudi Arabia's Crown Prince Mohammed bin Salman warned that if Iran acquires a nuclear weapon his kingdom would have to get one too.