A leading member of Saudi Arabia's royal family warned that Riyadh could seek to supplant Iran's oil exports if the country doesn't constrain its nuclear program, a move that could hobble Tehran's finances. In closed-door remarks earlier this month, Saudi Prince Turki al-Faisal also strongly implied that Riyadh would be forced to follow suit if Tehran pushed ahead to develop nuclear weapons and said Saudi Arabia is preparing to employ all of its economic, diplomatic and security assets to confront Tehran's regional ambitions.