Saudi crown prince warns it will build nuclear bomb if Tehran does the same

Saudi crown prince Mohammed bin Salman has set out plans for Saudi Arabia to develop nuclear weapons if Tehran makes the same move in the event of a collapse of the international nuclear deal signed in 2015.The prospect of a Middle East nuclear arms race will unnerve European leaders who are urging Donald Trump to retain the Iran nuclear deal which imposed strict curbs on the Iranian nuclear programme in return for sanctions relief.