10:06World UpdateMosul Battle: 900 Civilians Flee City Ahead of FightingBBC World Service Duration: 50 minutes Wed 19th Oct 2016, 10:06 on BBC World Service OnlineAs many as 1.5 million are thought to be in Mosul, with up to 5,000 fighters. Show more GenresNewsFormatsMagazines & ReviewsBrandWorld Update Source: BBC Online