The Iraqi government says it has begun an assault on Fallujah, the first Iraqi city to fall to the Islamic State of Iraq and the Levant (ISIL), back in January 2014.
Few expect it to be an easy fight.
Government forces had been surrounding the city for months. And ISIL has had time to dig in and bolster its defences.
Fallujah's recapture would build on a series of recent victories against ISIL and leave Mosul as the armed group's only remaining foothold inside Iraq.
But will the army succeed? And what would a victory mean for embattled Prime Minister Haider al Abadi?
Presenter: Laura Kyle
Matthew Glanville - A former British soldier who fought in Iraq. He also served as a Special Adviser to the Governor of Anbar Province.
Renad Mansour - Research Fellow focusing on Iraq at Carnegie Middle East Centre.
Matthew Henman - Head of IHS Jane's Terrorism and Insurgency Centre.
Source: Al Jazeera