BAGHDAD (Reuters) - Car bombs exploded at three checkpoints on the western outskirts of Iraq's holy city of Samarra on Thursday, killing three people and wounding 41 others, a security official and locals said. Samarra in central Iraq, 125 km (80 miles) **rth of Baghdad, is home to a significant Shi'ite shrine and has been under attack since Islamic State militants swept through most Sunni areas **rth of the capital in June. ...