Washington: Saudi Arabia will seek to develop its own nuclear weapons if Iran does, Foreign Minister Adel Al Jubeir told CNN on Wednesday, amid spiralling tension between the regional rivals.

Asked whether Riyadh would "build a bomb itself" if Tehran seizes on Washington's withdrawal from the 2015 Iran deal to resume a nuclear weapons programme, Al Jubeir said: "If Iran acquires nuclear capability we will do everything we can to do the same."