11:06BBC OS28/10/2015 11:06 GMT: Syria-Iraq Campaign: US Signals Change of StrategyBBC World Service Duration: 50 minutes Wed 28th Oct 2015, 11:06 on BBC World Service East and Southern AfricaUS says it will intensify air strikes in Syria and Iraq. Show more GenresNewsFormatsDiscussion & TalkBrandBBC OS Source: BBC Online