If the crisis that lingers over Iraq were a melody, it would be one that occasionally rises to crescendos and just as quickly decays into undertones, like an oud playing in a courtyard at night: soft, yet evocative; constant, yet unpredictable.
In the aftermath of the “Quiet Roar,” where the hum of militia activity and proxy pressures defined Iraq’s security contours, we now turn our attention not merely to the noise they make, but to the form those forces have taken, the paths they have walked, and the future they are carving into the country’s strategic landscape. Understanding this evolution is more than academic; it is an operational imperative for any security manager contemplating staff movement, re‑entry, or infrastructure resumption across Iraq and the Kurdistan Region of Iraq.
Militias in Iraq did not suddenly appear fully formed. Their roots trace back to the fractured aftermath of the 2003 invasion, deepening through the years of sectarian conflict, and crystallizing with force during the battle against the Islamic State.
From ad‑hoc local defense units to politically embedded power players, their transformation has followed Iraq’s own oscillations between fragmentation and unsteady governance. But the most consequential shift has been their institutionalization and legitimation within the state’s formal security architecture, mainly through the Popular Mobilization Forces (PMF).
The PMF, officially recognized by law yet structurally complex, stands at the epicenter of militia evolution in Iraq. Estimates of its personnel range broadly, but official Iraqi reporting places registered members above 200,000, with operational estimates falling closer to 160,000 to 180,000 trained fighters embedded across the country. This makes the PMF comparable in size to many standing armies worldwide, but its internal dynamics are not uniform. Its annual budget allocation, exceeding $2.6 billion, underscores not only political legitimacy but the sheer scale of resources involved in maintaining this force.
Understanding the PMF requires understanding its fragmentation. On one hand are factions closely aligned with Tehran, such as Kata’ib Hezbollah, Asa’ib Ahl al‑Haqq, Harakat al‑Nujaba, and the Badr Organization, some of which trace their training, command doctrine, and material support back to Iran’s Islamic Revolutionary Guard Corps.
These groups were central players during the fight against ISIS, but in the ensuing years, they have grown into hybrid entities, part militia, part political machine, part parallel security provider, wielding influence far beyond their battlefield origins. Their ideological commitments vary, but their operational coordination with Iranian structures and objectives is consistent enough to define them as core nodes of the trans‑regional axis of resistance and influence.
On the other hand are elements such as the Abbas Combat Division and units more deeply loyal to Iraqi religious institutions and state authorities, forces that emphasize territorial defense and formal integration within national security goals rather than external agendas. This duality between state‑centric forces and externally‑aligned proxies defines the PMF’s internal character and complicates Iraq’s attempts to assert unified control.
This complex evolution has real operational consequences. The surge in drone and rocket strikes against U.S. and coalition positions between 2023 and late 2025, numbering well over 500 attacks attributed to militia networks under the label of “Islamic Resistance in Iraq”, reflects not just tactical adaptation but strategic messaging tied to regional dynamics. These attacks, directed at bases, airports, and energy infrastructure, show how militias adapted from localized fighters into actors influencing broader geopolitical conflicts.
The rise of unmanned aerial systems has been particularly notable. Drones now feature heavily in militia arsenals, not as incidental tools but as front‑line strike mechanisms capable of penetrating defended airspace.
Unlike simple indirect fire, drones offer range, persistence, and ambiguity in attribution, complicating defensive planning for security operations and embassies alike. For multinational companies working in energy, transportation, or logistics, these drones have altered the risk calculus: perimeter defenses are no longer enough; airspace awareness and advanced detection systems are becoming operational necessities.
Case studies from recent years illustrate the evolution of militia behavior. In early 2025, a majority of attacks on facilities in northern Iraq, including airports and bases in the Kurdistan Region, were executed with drones, marking a shift away from traditional rocket and mortar barrages toward more precise, technologically integrated engagements. These incidents targeted both military objectives and critical civilian infrastructure, leading to the temporary suspension of operations at energy facilities and prompting multinational firms to reassess their continuity planning.
Another high‑profile example came in January 2024, when a militia‑launched a drone that struck a logistics facility near Erbil International Airport. While there were no reported casualties, the strategic implication was clear: no region, including those previously considered stable, was beyond the operational reach of these forces.
The political dimension of militia evolution is equally consequential. Since legislative recognition, many militia‑affiliated actors have entrenched themselves in Iraq’s political system, securing seats in parliament and influencing ministries and budget processes.
This transformation from battlefield actors to political stakeholders has blurred the lines between state and militia, complicating efforts to disarm or disband unauthorized groups. The PMF’s legal status reporting directly to the prime minister rather than to the defense ministry entrenches this ambiguity and limits the Iraqi government’s capacity to impose uniform discipline.
Yet evolution is not unilateral. Militia forces are not monolithic in their willingness to escalate. Interviews and anecdotal accounts from former members and observers suggest a nuanced internal landscape where strategic priorities vary. Some factions engage directly in proxy conflicts tied to Tehran’s regional agenda, while others cautiously avoid full integration into larger wars, balancing local security priorities against broader ideological imperatives. This divergence illustrates not just military evolution, but institutional identity formation: militias are shaping themselves as autonomous actors as much as extensions of state or foreign policy.
The ongoing regional conflict involving the United States, Israel, and Iran has accelerated these evolutionary pressures. Militia participation in attacks against U.S. and allied targets has been reported under various banners, sometimes without clear claims of responsibility, reflecting a degree of operational opaqueness that complicates attribution and response.
In March 2026 alone, militia networks claimed multiple drone and missile strikes on U.S. positions in Baghdad and the Kurdistan Region, as well as attacks on Kurdish opposition groups and infrastructure, actions that, although lacking formal claims, point to an expanding theater of militia engagement.
The interaction between these armed groups and formal Iraqi security forces illustrates another dimension of evolution: competitive partnership. In several incidents over the past year, joint operations have occurred where PMF elements worked alongside Iraqi army units in contested areas of Nineveh and Diyala to contain insurgent remnants. While ostensibly cooperative, such operations reflect broader complexity: militias bring local knowledge and combat experience, but also introduce overlapping command structures and divergent strategic objectives.
For security managers and decision-makers, understanding this evolution is crucial in shaping effective operational postures. The threat landscape is no longer static; it shifts with militia priorities, regional incentives, and political currents. Security protocols must therefore be both granular and flexible.
It is no longer sufficient to assess risk only at the level of visible infrastructure threats; planners must integrate analysis of militia adaptation, internal factional dynamics, and regional signaling. For example, militia involvement in political processes often signals upcoming shifts in operational tempo, as political leverage translates into resourcing and recruitment capacity.
Humanitarian implications intertwine with this evolution. Increased militia activity often triggers displacement, restrictions on movement, and disruption to essential services, especially in contested governorates. In Diyala Province, for example, militia deployments, even when justified as stabilization operations, have constrained civilian mobility and delayed humanitarian assistance, underscoring how security operations intersect with civilian welfare in unpredictable ways.
Scenario planning must incorporate these evolving dynamics. A plausible scenario seen in 2026 involved escalation following regional strikes attributed to Iranian proxies. Within Iraq, this led to a series of coordinated drone attacks on energy and military infrastructure, disruption of supply chains, and heightened alert levels across urban centers including Baghdad, Basra, and Erbil. These developments, while individually contained, created compound effects that challenged both mobility and operational continuity for foreign entities. Security teams that anticipated these compound effects, rather than single events, were better positioned to manage them.
It is worth noting that not all militia activity is inherently hostile toward foreign actors. Local defense arrangements and community security initiatives, often driven by tribal or regional imperatives, sometimes involve militia groups operating with tacit local support. Distinguishing these groups from those aligned with external agendas is essential for calibrating risk. This cultural and operational differentiation demands deep local expertise and robust intelligence networks.
Iraq’s militia evolution also raises fundamental questions about sovereignty, legitimacy, and the nature of state authority. The integration of militias into formal security structures has bolstered Iraq’s defensive capacity in certain contexts, but it also weakens centralized control and invites foreign influence into internal affairs. The interplay of political, military, and economic forces within these militias continues to shape not only Iraq’s security environment but its political and social trajectories as well.
For security practitioners weighing re‑entry and sustained operations, the message is clear: the evolution of Iraqi militias cannot be seen as a fixed backdrop. It is an active variable in the risk equation, one that shapes not just the frequency and type of incidents, but the environment in which personnel, infrastructure, and strategic interests are deployed. Security planning must account for militia evolution as a dynamic factor requiring continuous monitoring, adaptive protocols, and deep contextual understanding.
Ultimately, the story of Iraq’s militias is one of transformation: from fragmented forces of necessity to integrated actors of consequence. Their evolution is not a linear path toward greater threat or stability, but a complex journey shaped by history, political opportunity, regional pressures, and operational adaptation. For those who operate in this space, listening to the echoes of that transformation and understanding how they resonate beneath Iraq’s surface is essential to navigating what comes next.
