The threat from within Europe appears greater than that from ISIS's central command.
Troops attack militants in Hammam al-Alil, while special forces fight inside Mosul's eastern districts.
Five possible scenarios as coalition troops continue to strike a blow against the self-proclaimed caliphate.
President Erdogan said Turkey would help its coalition partners but not the Syrian Kurdish fighters.
About 50 villages have been captured as the military clears the way for the main battle in Mosul.
Those who join ISIS are often swayed by the sense of belonging or excitement they feel a caliphate offers.
The Syrian army and its allies see a risk that Islamic State will regroup in eastern Syria as it is forced from the Iraqi city of Mosul.
Dabiq figures prominently in ISIS propaganda as the site of a future battle between Muslims and infidels that will presage doomsday.
Attacks target a Shi'ite gathering, police checkpoint and the family of a Sunni paramilitary leader opposed to ISIS.
Islamic State-held village is heralded as the setting for a final battle between Muslims and infidels.
The man wounded up to nine people in a knife attack at a mall in central Minnesota before he was shot dead by an off-duty police officer.
Turkey's control of the border raises tensions, as it's a bulwark against Syrian Kurds who America supports.