Iraq Liberates Fallujah. Now the Hard Part Begins

When the Iraqi government declared victory on Sunday after routing Islamic State gunmen from the key city of Fallujah, it cleared a major hurdle on the way to a much larger and more complicated fight for the ISIS-held city of Mosul in northern Iraq.

The victory in Fallujah deprives ISIS of an important territorial asset, a city 40 miles west of Baghdad from which jihadists directed a lethal campaign of car bombings in the capital.