Debate: Insider trading and piracy

Insider trading is back in the headlines as authorities attempt to clamp down on what has become a professional pursuit for many involved. Another financial threat - piracy in the Indian ocean - also calls for the stepping up of international efforts to protect the world economy. Frederick Studemann, analysis editor, chairs a debate on the lawlessness with Martin Sandbu, leader writer, Brooke Masters, chief regulation correspondent, and Robert Wright, transport correspondent.