Powerful forces within the Arab World believe the time has come for Sunni Arabs to confront a perceived regional threat from Shiite Iran. That is a big factor in the Saudi-led bombardment of Shia rebels in Yemen - it also underpins the Arab League's plan to create a pan-Arab intervention force. Hardtalk speaks to Mohammed Al Hussaini Al Sharif, a Saudi diplomat who is the Arab League envoy in Washington. Is the new brand of muscular Saudi leadership in the Arab world either credible or sensible? Show less