text: Iraq political launch marred BAGHDAD - A deadly bomb blast in the holy Shiite city of Karbala and furious criticism of Shiite politicians by Iraq #39;s defense minister cast a pall over the official launch Wednesday of Iraq #39;s election campaign, threatening to inflame sectarian tension 
inputs: Iraq political launch marred BAGHDAD - A deadly bomb blast in the holy Shiite city of Karbala and furious criticism of Shiite politicians by Iraq #39;s defense minister cast a pall over the official launch Wednesday of Iraq #39;s election campaign, threatening to inflame sectarian tension 