Thu Sep 24, 2015 11:19am EDT Related: World, Russia, Syria Syrian army uses new Russian jets to strike Islamic State: monitor Syrian government forces used newly arrived Russian warplanes to bombard Islamic State insurgents in Aleppo province in northern Syria, a group monitoring the civil war said on Thursday, in an attempt to break a siege on a nearby air base. Russia is bolstering its ally Damascus against rebels with military aid that U.S. officials say has included fighter jets, helicopter gunships, artillery and ground forces. The air strikes, which began earlier this week, were accompanied by ground attacks near...