BAGHDAD, Iraq - Sunni groups complained Saturday that one of their top religious leaders was detained by American troops in Tikrit for several hours, while the U.S. military said three soldiers from the same division were killed in separate incidents. The deaths of the three soldiers from the Multi-National Division in Baghdad raised to 15 the number of U.S. servicemembers who were killed or were found dead this past week. One soldier was killed Saturday and the other two Friday. A soldier was killed Saturday by a bomb during a foot patrol south of Baghdad. On Friday, one soldier was...