Fourteen shot at a trading company. At least 90 kidnapped at other businesses. Bodies dumped nightly, bound hand and foot, some tortured. A new brand of violence — a deadly mix of organized crime and sectarian murder — is tearing at Iraq. Its origins are murky. But the savagery has turned March into a pivotal month in the three-year war — a month of gruesome news, mixed with some good. A sharp decline in American deaths appears to be the payoff for handing more duties to the Iraqi army, leaving U.S. forces less exposed to attack. Full Story