String of Iraq car bomb blasts kill at least 17 BAGHDAD (Reuters) - A string of car bomb blasts mainly targeting police checkpoints killed at least 17 people across Iraq on Sunday, police and hospital sources said. The most deadly explosions took place in Taji, 20 km (12 miles) north of Baghdad, where bombs in three parked cars went off separately, killing eight and wounding 22. Reporting by Kareem Raheem in Baghdad; Editing by Andrew Heavens