A string of explosions in Baghdad and north of the capital Monday killed at least 11 Iraqis and injured 47. An American soldier was reported killed in insurgency-plagued western Iraq. The violence underscored a dangerous leadership vacuum as Sunni Arab and Kurdish politicians increased pressure on Shiite Prime Minister Ibrahim al-Jaafari to abandon his bid for a new term and leaders of Iraq’s Shiite majority struggled to overcome internal divisions. Full Story