Defence giant approaching

It is a marriage that could result in the biggest defence company in the world. But the merger of BAE, Europe's largest military contractor, and EADS, the region's dominant aerospace company, faces huge hurdles. Carola Hoyos, defence correspondent, and Vincent Boland, Lex writer, join analysis editor Fred Studemann to discuss the proposed merger; what stands in its way, and the liklelihood of a successful deal.