Description:A series of explosions hit Baghdad on Thursday, killing at least seven people in the first wave of attacks on Iraq's capital since a crisis erupted between its Shi'ite-led government and Sunni rivals after the last U.S. troops left, police said. Two roadside bombs ripped into the central Alawi area, killing at least four people and wounding 14 more, while a car bomb hit the commercial Karrada district, killing one person and wounding six more, police and security officials said.(0:32)