Summary: 2003 U.S. invasion of Iraq, the pendulum in Mosul has swung several times between stark violence and fragile security, and 2008 is no different. Last November, when the American regiment arrived, the city’s western half was “entirely enemy territory,” with other areas not much better, says Maj. John Oliver, operations officer of the 3rd Armored Cavalry Regiment’s 3rd Squadron. … A series of blasts struck Baghdad for the third consecutive day, killing nine people and wounding more than 30 others. … Taliban fighters hijacked trucks carrying Humvees and other supplies for U.S.-led troops in Afghanistan, authorities said after a brazen attack near the Khyber Pass that underscored the militants’ grip across key mountain strongholds.