"So Mr. Obama has thrown his weight behind attempts by the royal family of Bahrain, the home of the Navy’s Fifth Fleet, to survive, although protesters say their demands have not been met. He has said little about political grievances in Saudi Arabia, a major oil supplier, where there were reports on Thursday of a violent dispersal of Shiite protesters. And he has limited White House critiques of Yemen, where the government is helping the United States root out a terrorist threat, even after that government opened fire on demonstrators."