Saudi Arabia wades in on Bahraini unrest

After a month-long stand-off between the government and the opposition, Bahrain's internal crisis between Sunnis and Shiites now runs the risk of becoming a regional conflict. Saudi Arabia has sent in troops to help the Sunni-run government contain the unrest, but their presence is being seen as interference by Shiites, who are in the majority on the island, as well as the government in nearby Iran.