Protests continue across the Arab world against authoritarian regimes: "Police fired tear gas to disperse hundreds of anti-government demonstrators blocking access to the financial district of Bahrain's capital on Sunday, as sectarian tension escalated in this tiny island kingdom. Elsewhere in the region, confrontations between protesters and security forces continued in Yemen, and Oman's ruler responded to demonstrators by giving some governing power to officials outside the royal family for the first time. Despite the growing tensions, the protest movement in Bahrain remains deeply split."