BAGHDAD — Two months into the battle for Mosul, more than 100,000 people have fled Iraq's second largest city as the military makes slow progress against entrenched Islamic State fighters, the International Organization for Migration said Sunday.Iraqi military forces in the tens of thousands have seized control of about a quarter of the city since the operation began Oct. 17, but they still encounter pockets of stiff resistance from the militant group that seized Mosul two years ago.
