Editor’s Note: Excerpts of the following article are adapted from the author’s paper, originally published in CTC Sentinel, a publication of the Combating Terrorism Center at West Point.
Since its inception in 1991, Hamas’ military wing, the Izz al-Din al-Qassam Brigades, has evolved from a small, clandestine insurgent network into a disciplined, strategically oriented force capable of shaping the conflict with Israel. Salah Shehade, appointed as its first commander, laid the groundwork for a highly compartmentalized operational structure in Gaza and the West Bank. He emphasized small, tightly knit cells of four to five men, each insulated against infiltration in a context of pervasive Israeli intelligence surveillance. Recruits were rigorously vetted, often politically active university students, and senior leadership was deliberately limited to minimize risk. This early structure provided Hamas with the operational resilience necessary to survive Israel’s vast intelligence network, estimated by Palestinian sources to include over 200,000 informants over time, while allowing the organization to develop a culture of secrecy, discipline, and ideological cohesion.
Initially, the Qassam Brigades targeted Israeli military outposts and settlements, consciously avoiding civilian casualties. This restraint shifted dramatically on April 16, 1993, when Hamas executed its first suicide bombing, signaling a new operational doctrine. The attack, executed by Saher Tamam al-Nabulsi and engineered by Yahya Ayyash, killed both Palestinians and Israeli soldiers, and marked the beginning of a campaign that would redefine Hamas’ strategic posture. Ayyash, known as al-Muhandis, leveraged his technical training to convert everyday materials into explosives, transforming suicide bombings into both a lethal tactic and a propaganda tool. Hamas framed these operations as “martyrdom missions,” elevating bombers to the status of shuhada, thereby legitimizing violence, mobilizing recruits, and linking ideological appeal to material incentives through stipends to families of martyrs and salaries for Qassam fighters.
The escalation of suicide bombings coincided with the Oslo Accords in 1993, which represented a negotiated compromise between Israel and the Palestine Liberation Organization (PLO). Hamas condemned the accords as a betrayal, arguing they legitimized occupation while failing to address key Palestinian demands. By intensifying attacks on Israeli soldiers and civilians, Hamas sought to undermine Oslo, deepen Israeli security fears, and consolidate its position as the uncompromising Islamist alternative to Fatah. This dual strategy of armed coercion and political positioning illustrates a core feature of Hamas’ operational logic: the deliberate use of violence to shape both adversary behavior and internal Palestinian political narratives.
The February 25, 1994 massacre at Hebron’s Ibrahimi Mosque by Israeli settler Baruch Goldstein catalyzed a wave of retaliatory Hamas operations under Ayyash’s guidance. These attacks, including a series of suicide bombings between 1994 and 1996, not only caused significant casualties but also eroded public confidence in the peace process, radicalized Israeli extremists, and ultimately contributed to the assassination of Prime Minister Yitzhak Rabin in 1995. By linking violent operations to strategic political outcomes, Hamas demonstrated an early capacity to weaponize instability, exploiting crises to advance both ideological and operational objectives.
The Second Intifada, beginning in September 2000, further exemplified Hamas’ ability to leverage public unrest into a sustained military campaign. Frustration with stalled negotiations and rapid expansion of Israeli settlements created fertile ground for mass protests that quickly transformed into armed operations. Between 2000 and 2005, Hamas carried out 54 suicide bombings, resulting in hundreds of Israeli deaths and thousands of injuries. The Palestinian Authority’s inability to restrain the organization, combined with Israel’s overwhelming military responses—including Operation Defensive Shield and the construction of the separation barrier—allowed Hamas to expand its influence, militarize Gaza, and consolidate operational expertise. These developments demonstrated a critical strategic principle: Hamas adapted to state-level coercion by decentralizing operations and embedding itself within local governance and social structures, ensuring resilience under sustained military pressure.
Hamas’ political evolution, including its boycott of the 1996 Palestinian elections and eventual participation in the 2006 legislative elections, mirrored its military maturation. By presenting itself as a clean and effective alternative to a corrupt Fatah, Hamas leveraged social services and political messaging to complement its military narrative. Its landslide electoral victory in 2006, despite international isolation and economic sanctions, underscored the strategic value of a dual approach: sustaining popular legitimacy through governance and social provision while maintaining an armed capacity capable of coercion and deterrence. Hamas’ subsequent imposition of Islamist social policies and the creation of a morality police reinforced its ability to project authority, even as internal political tensions with Fatah escalated toward violent confrontation and ultimately the 2007 takeover of Gaza.
The military confrontations following the 2007 Gaza takeover, including Operation Cast Lead in 2008–2009, highlighted Hamas’ operational ingenuity and its capacity to sustain conflict under extreme adversity. Despite devastating Israeli air and ground operations, Hamas rebuilt tunnels, restored rocket arsenals, and maintained internal control, signaling an operational philosophy centered on resilience and rapid adaptation. The organization’s ability to integrate Iranian and Hezbollah support, manage logistics under blockade conditions, and employ asymmetric tactics—such as mining buildings, hiding weapons in civilian infrastructure, and extending rocket ranges—reflects a sophisticated understanding of hybrid warfare, blending guerrilla tactics, strategic deception, and political signaling.
The abduction of Gilad Shalit in 2006 and the subsequent 2011 prisoner exchange illustrate Hamas’ strategic use of hostages as both bargaining chips and tools of psychological warfare. The release of high-value prisoners—including those responsible for some of Israel’s deadliest attacks—reinforced operational networks and revitalized the movement’s armed wing. Among the prisoners freed was Yahya Sinwar, who would later emerge as the key architect of Hamas’ military modernization, fusing political direction with armed command and forging direct ties with Iranian and Quds Force operatives. Sinwar’s leadership transformed Hamas into a professionalized fighting force, exemplified by the creation of the al-Nukhba unit, trained for cross-border raids, targeted assassinations, and advanced combat operations. The operational lessons from the 2012 and 2014 Gaza wars—including the limitations of conventional military strikes against deeply entrenched, tunnel-based networks—reinforced Hamas’ focus on decentralization, flexibility, and multi-domain capability.
By the late 2010s, Hamas had effectively matured into a hybrid actor, integrating social services, political governance, and a sophisticated military apparatus. The organization’s capacity to coordinate multiple factions, synchronize rocket fire, and project force during the 2021 Gaza war underscores the strategic logic underpinning its evolution: to sustain influence and operational capability under conditions of extreme external pressure, while continuously preparing for future escalation. The October 7, 2023, assault, known as Operation Al-Aqsa Flood, exemplifies this maturation. Hamas executed a meticulously planned, multi-site attack involving simultaneous breaches, rocket barrages, drone operations, and coordinated ground assaults—demonstrating operational planning, intelligence exploitation, and force projection far beyond what Israeli analysts had anticipated. The attack, which killed approximately 1,200 civilians and captured roughly 250 hostages, highlighted both Hamas’ operational reach and its integration of hybrid tactics, combining conventional insurgency, psychological warfare, and strategic theater to maximize impact.
Hamas’ propaganda and psychological operations have complemented its kinetic campaigns, shaping perceptions domestically and internationally. The careful orchestration of media appearances, hostage displays, and narrative framing reinforces ideological cohesion and deters adversary action, even under sustained military pressure. Leaders such as Abu Obeida became symbolic figures, projecting menace and resolve while coordinating the messaging of battlefield events. Such operations underscore Hamas’ recognition of the interdependence between physical and cognitive domains of conflict, where psychological dominance can influence strategic outcomes as effectively as kinetic operations.
The Israeli response to Hamas’ evolution has been multifaceted, combining intelligence-driven decapitation strikes, precision airstrikes, ground operations, and advanced surveillance capabilities. Israel’s efforts have eroded Hamas’ conventional leadership, killing senior figures including Ismail Haniyeh and Yahya Sinwar, and degrading its formal governance structures. Yet Hamas’ decentralized, polycentric cell structure, reinforced by dedicated tunnels, independent battalions, and local command networks, has allowed it to absorb these losses and maintain operational continuity. The ongoing reliance on decentralized units, small autonomous cells, and diversified weaponry—including IEDs, short-range rockets, anti-tank guided missiles, snipers, and drones—illustrates a deliberate shift toward resilient guerrilla warfare, forcing Israel into a protracted campaign of attrition with high operational and political costs.
Hamas’ survival strategy relies on a combination of embedded social networks, hybrid governance, and external patronage. While the movement has suffered severe attrition in personnel and leadership, it maintains influence through religious institutions, charities, and social services, ensuring both recruitment pipelines and political leverage. Iranian backing provides technical expertise, funding, and designs for weapons production, although the losses sustained by Hezbollah in 2024–2025 have strained Tehran’s ability to project support. Qatar and Turkey sustain Hamas politically and financially, allowing it to navigate regional isolation while continuing to operate militarily. The organizational tension between pragmatist and hardline factions—exemplified by the divergent strategies of Khaled Mash’al and Khalil al-Hayya—reflects the broader strategic dilemma: whether to moderate and integrate into a national framework or to cling to coercive power and external patronage.
Current assessments indicate that Hamas has shifted toward a hybridized insurgency, retaining operational capability, ideological cohesion, and strategic flexibility, even as formal governance and military structures in Gaza are degraded. Its dispersed leadership, external diplomatic and financial centers, and latent networks in the West Bank and diaspora preserve the movement’s resilience and ensure it remains a long-term strategic threat. The movement’s focus on time, attrition, and political leverage—particularly through the hostage file—demonstrates a sophisticated understanding of protracted conflict dynamics, where endurance, adaptability, and multi-domain operations are essential to survival.
Hamas’ trajectory suggests that conventional military degradation alone will not neutralize the organization. Instead, the movement’s embedded social networks, hybrid military-civilian operations, and external patronage ensure continuity, allowing it to recover, adapt, and reassert influence over time. The strategic calculus for Israel and regional actors is therefore complex: any effort to diminish Hamas’ capabilities must address not only kinetic threats but also the movement’s political, social, and financial resilience. Without comprehensive measures encompassing ceasefire enforcement, monitoring, reconstruction oversight, and governance integration, Hamas is likely to persist as a polycentric, hybrid insurgent actor, capable of influencing Gaza’s political landscape, sustaining armed resistance, and shaping future regional dynamics.
The evolution of Hamas from a small militant cell to a hybrid, polycentric insurgency reflects a deliberate and adaptive strategy rooted in ideological commitment, operational innovation, and political acumen. From its early compartmentalized cell structure to its large-scale coordinated operations, Hamas has leveraged asymmetric warfare, psychological operations, and social embeddedness to survive under extreme pressure. Its ability to integrate military capability, political governance, and international patronage demonstrates a sophisticated understanding of hybrid conflict dynamics, ensuring resilience despite repeated decapitation strikes and severe operational losses.
For policymakers and military planners, Hamas’ evolution offers a stark illustration of the strategic challenges posed by decentralized, ideologically motivated insurgent actors, whose capacity for adaptation, social embedding, and hybrid warfare ensures enduring relevance and operational threat in the region.
