How to expand the conflict: add the Kurds

Ed Wong goes to Mosul:

While the American military is trying to tamp down the vicious fighting between rival Arab sects in Baghdad, conflict between Arabs and Kurds is intensifying here, adding another dimension to Iraq’s civil war. Sunni Arab militants, reinforced by insurgents fleeing the new security plan in Baghdad, are trying to rid Mosul of its Kurdish population through violence and intimidation, Kurdish officials said.