US army concerned despite relative calm in Iraq

The US military said Wednesday that it remains "extremely concerned" about high-profile bombings despite a drop in the overall death toll in Baghdad after more than 300 people were killed in such attacks in recent weeks. The Iraqi government, meanwhile, announced it was extending a security operation outside the capital, although it gave few details. Military spokesman Maj. Gen. William Caldwell said sectarian violence dropped 26 percent from February to March. But he was largely referring to execution-style killings and assassinations usually blamed on Shi'ite death squads and acknowledged the military remained "extremely concerned" about high-profile bomb attacks that have killed more than 300 people in recent weeks.