A military vehicle fires and smoke pours from a building.<br/> <br />This video purports to show Homs, Syria - once a stronghold for rebel fighters battling Syrian President Bashar al-Assad - under attack by government troops on Tuesday.<br/> <br />Obtained online, the footage cannot be independently verified by Reuters.<br/> <br />Opposition activists say Syria's military killed 31 people in Homs and other opposition areas on Tuesday, as a deadline drew near for Damascus to withdraw troops as promised under an international peace plan drew near. Six government soldiers were also killed in the fighting, according to activists.<br/> <br />Diplomats say Assad has until midnight Syria time to pull his forces. A full truce is set to start by 6 a.m. on Thursday.<br/> <br />Meanwhile, Syria's foreign minister wants a guarantee that insurgents will honor the truce...a last minute demand now fueling doubts that the peace plan can keep a 13-month uprising from sliding into civil war.<br/> <br />Katharine Jackson, Reuters.
