Apparently seeking to calm fears that he will not go after militia gunmen loyal to one of his key political backers, Prime Minister Nouri al-Maliki said 400 fighters from the Mahdi Army had been arrested over the past several weeks. In Baghdad on Thursday, bombers and gunmen killed at least 19 more people in a series of attacks in the pre-noon hours as the capital faces a surge in violence ahead of a planned U.S.-Iraqi security crackdown. Full Story