(CNN)Iraq roils in a maelstrom: ISIS now controls Ramadi, a new prime minister is in charge, Shiite-Sunni bloodshed flows, and a U.S.-led coalition is back, this time executing airstrikes in Iraq. The saga of Iraq is, as an analyst put it, "a rather straightforward but sad story" since the U.S. military left the country at the end of 2011, only to find itself returning in a smaller way. The fall of Ramadi to ISIS this week strikes many as a milestone because the city is the capital of Iraq's biggest province and because U.S. troops heroically fought insurgents there in the mid-2000s. Some politicians feel the U.S. withdrawal of troops was a mistake, though public opinion favored it then. "An...
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