Hillary Clinton has called on Iraqis to settle their differences amid fears a series of suicide bombings is reigniting a sectarian war.Speaking during a surprise visit to Baghdad, her first since becoming the US Secretary of State, she sought to reassure Iraqis of Washington’s support. “We are committed to Iraq. We want to see a stable, sovereign, self-reliant Iraq, but we know we are coming into office when there is a transition underway. The prior administration agreed to withdraw our troops, and we support that,” said Clinton. Clinton’s trip comes a day after two female suicide bombers blew themselves up outside a Shi’ite Muslim shrine in Baghdad, killing 60 people – the deadliest single incident in nearly a year. It was the third major attack in two days, bringing the two-day death toll to at least 150 people. An end of year election is also raising tensions as political parties and armed groups jostle for dominance of the oil-producing nation.