Frayed relations between Iraq’s Shiite leadership and the American authorities came under increased strain on Monday as Shiite leaders angrily denounced a joint American-Iraqi raid on a Shiite compound and suspended negotiations over a new government. The raid on Sunday evening, which killed at least 16 people, also prompted the governor of Baghdad to announce a halt in cooperation with the American authorities, and Shiite militiamen to brandish their weapons in the streets of eastern Baghdad and declare their readiness to retaliate against American troops. Full Story