This article examines the future of the Iraqi Popular Mobilisation Forces (PMF) after the fall of the Islamic State of Iraq and Syria (ISIS) in Iraq. The PMF is an umbrella organization of armed militias that assisted the coalition forces in liberating Iraqi cities from ISIS control. However, in the aftermath of that operation, the PMF now poses a major threat for the future of state-building in Iraq. Their armed strength and loyalties to leaders other than the Iraqi government, combined with evidence from existing research on pro-regime militias, suggest that the PMF poses a high threat in an unstable environment if not managed carefully. Therefore, this article addresses the following question: What can be done with the various militias o...