Bahrain election: What’s behind the boycott?

Shia opposition groups refuse to take part in parliamentary polls in Sunni-ruled island kingdom. Jane Dutton speaks to Ali al Aswad,a member of the Al Wefaq National Islamic Society, and a former opposition member of parliament; Mansoor Arayedh, chairman of the Gulf Council for Foreign Relations, and a former member of Bahrain's Shura Council; and Joseph Kechichian, columnist for the Gulf News and a specialist on Middle East affairs.