Bahrain riot police cars are parked at a bridge as they gather to disperse protesters camping at Pearl Roundabout, in Manama, Feb 17, 2011. Police in the Gulf island kingdom of Bahrain attacked demonstrators camped out in the capital on Thursday, killing three, in a move to stifle pro-democracy protests inspired by similar movements across the Middle East. [Photo/Agencies]

Government backers (back to the camera) hurl rocks at anti-government protesters during clashes in Sanaa Feb 17, 2011. Hundreds of Yemen government loyalists wielding batons and daggers chased off a small group of protesters trying to kick off a seventh day of rallies on Thursday to demand their president end his 32-year rule. [Photo/Agencies]