SULAIMANIYAH, Iraq— A suicide bomber posing as a dairy deliveryman struck a Kurdish security headquarters Wednesday, setting off a series of rapid-fire attacks against the oil-rich Iraqi city of Kirkuk that killed seven and wounded up to 80 people.
Within minutes, two more bombs exploded nearby, sending dark plumes of smoke into the clear winter sky and ending a six-month lull in violence in a city rife with simmering ethnic tensions located 180 miles (290 kilometers) north of Baghdad.
The city is divided between Kurds, Turkomen and Sunni and Shiite Arabs, and has long been feared to be a potential new flashpoint in Iraq.