Iraq yesterday said the rush-hour bombings that rocked Baghdad sought to create a sectarian crisis in the war-torn country as fresh rebel violence killed 12, including four US soldiers. At the same time, Russian Vladimir Putin called for a timetable for the withdrawal of US troops and the holding of an international conference on Iraq.At least 43 people were killed Wednesday when three car bombs ripped through a central Baghdad bus station and a nearby hospital, shattering the capitalâs relative calm of recent weeks. Insurgents continued their attacks yesterday, killing four US soldiers and eight other Iraqis, including a child, elsewhere in the country. The soldiers were killed by a roadside bomb in the northern town of Samarra, the US military said, taking to around 50 the US military deaths across Iraq in August, according to an AFP tally based on Pentagon figures. Another US military convoy was hit by a roadside bomb in Baghdad early yesterday with Iraqi officials reporting some American casualties in the blast although the US military had no immediate comment. âOur troops have seen American soldiers evacuating some of their wounded colleagues from the humvee after it hit the bomb,â a Defense Ministry source said.