A car bomb exploded beside a market and a suicide bomber struck a bus in separate attacks Monday that killed14 civilians and wounded at least 33.Three Iraqi children were killed and eight wounded when they were blasted by a roadside bomb on their way to school in the troubled northern oil hub of Kirkuk on Tuesday, a police officer said. The bomb exploded in the largely Turkmen district of Musala in northern Kirkuk shortly before 10:00 am (0700 GMT), said local official.Two boys and a girl were killed and eight children wounded by shrapnel from the explosion as they were walking to the primary school.