Islamist radicalisation is the process by which a political-religious ideology—commonly called Islamism or Salafi-jihadism in its most violent forms—converts religious identity into a programme of supremacy and, frequently, organised violence. It treats a particular reading of scripture and early Islamic history as a permanent constitution for society and state. Non-Muslims, and Muslims who reject that reading, are assigned inferior or enemy status. The result is not private belief but a continuing security problem across regions.
The ideological core is stable even when tactics change. Classical jurisprudential categories dividing the world into the realm of Islam and the realm of war, rulings that prescribe death for apostasy and blasphemy, and the doctrine of offensive jihad were systematised centuries ago. Twentieth-century activists modernised them for mass politics. Sayyid Qutb argued that contemporary Muslim societies had relapsed into ignorance and required vanguard overthrow. Abul A’la Mawdudi provided a blueprint for gradually capturing state institutions. Later figures—Abdullah Azzam, Osama bin Laden, Ayman al-Zawahiri, Abu Bakr al-Baghdadi—translated those ideas into recruitment literature that explicitly authorised attacks on civilians. Parallel Shia currents, centred on the Iranian revolutionary model and groups such as Hezbollah, exported the same logic of religiously sanctioned militancy under different leadership. These texts remain in circulation; they are not archival curiosities.
The threat has proved durable because the transmission mechanisms are ordinary. Madrasas and Friday sermons in multiple countries still present armed struggle as a religious duty in certain conditions. State and private funding from Gulf sources historically amplified stricter interpretations abroad. Satellite channels and, later, encrypted apps and short-video platforms removed the need for formal membership. A young man can move from mainstream religious content to explicit calls for violence without ever visiting a training camp. Prison radicalisation and online echo chambers have repeatedly shortened that path, as investigations after the 2015–2017 wave of European attacks and later lone-actor stabbings documented.
Empirical patterns contradict the claim that the phenomenon is marginal or spent. Global terrorism databases maintained by academic and government bodies have for years shown that groups citing explicit Islamic justification account for a large share of fatalities in armed conflicts and for the majority of completed mass-casualty attacks in Western countries since 2000. The geographic spread runs from the Sahel (where affiliates of al-Qaeda and the Islamic State control territory and tax populations) through Afghanistan under the Taliban, parts of Somalia, Syria, and Iraq, to recurrent plots in Europe, North America, and South Asia. High-profile cases—the 2008 Mumbai attacks, the 2015 Paris attacks, the 2016 Orlando and Nice killings, the 2019 Sri Lanka Easter bombings, and numerous smaller vehicle and knife attacks—share the same stated motive: religious obligation rather than secular grievance alone.
Aviation has been a repeated target precisely because it maximises fear and casualties. The 11 September 2001 hijackings were the largest single example. Subsequent attempts (shoe bomb, liquid explosives, underwear bomb, and various disrupted plots) show persistent interest. The October 2026 Flydubai incident, in which an Omani first officer allegedly stabbed the captain of an Israel-bound flight and the aircraft plunged thousands of feet before passengers intervened, fits the same operational idea even while formal investigations continue. Israeli officials have publicly linked the suspect to Islamist radical indoctrination. Whether or not every detail is finally confirmed, the episode illustrates how a single radicalised individual in a trusted role can threaten hundreds of lives.
Two features keep the threat from fading with any one organisation’s defeat. First, the ideology is not dependent on a single hierarchy; territorial losses by the Islamic State in Syria and Iraq did not eliminate provincial affiliates or inspired actors elsewhere. Second, social incentives inside some communities raise the cost of internal dissent. Critics who name doctrinal sources are often accused of betrayal or Islamophobia, while preachers who praise “martyrdom operations” retain platforms. Polling over two decades has found non-trivial minorities in several Muslim-majority countries endorsing severe hudud punishments or violence against civilians in defence of Islam; those attitudes supply a permissive environment even when most individuals never act.
The continuing risk is therefore not abstract. It appears in foiled plots, successful lone-actor attacks, territorial insurgencies, and the radicalisation of people who already hold sensitive positions—pilots, soldiers, medical staff, or officials. Countermeasures that address only weapons or borders, while leaving the doctrinal pipeline and its social protection unexamined, have repeatedly proved incomplete. The record since the late twentieth century shows an ideology capable of regenerating cadres faster than any single military campaign can remove them.
Instances of Muslim radical leaders propagating views that treat violence, religious supremacy, or the punishment of dissent as duties are extensive and publicly documented. These figures do not merely hold private opinions; they publish, broadcast, and institutionalise arguments that lower the barrier to radicalisation.
Sayyid Qutb’s Milestones (1964) remains a foundational text. He declared that modern Muslim societies lived in a state of jahiliyyah and that a vanguard had the right to overthrow them by force to restore divine sovereignty. The book circulated widely inside the Muslim Brotherhood’s networks and later among jihadist groups; Egyptian authorities executed Qutb in 1966, but his framing of fellow Muslims as legitimate targets of revolutionary violence continued to shape later organisations.
Abul A’la Mawdudi, founder of Jamaat-e-Islami, argued across decades of writing that Islam is not a private faith but a complete political system that must displace man-made law. His works supplied both South Asian Islamist parties and, indirectly, militant currents with the claim that partial secular arrangements are religiously intolerable. Jamaat-linked networks in Pakistan and Bangladesh have repeatedly been accused by local governments and researchers of nurturing environments in which more violent offshoots recruit.
Yusuf al-Qaradawi, the Egyptian scholar long associated with the Muslim Brotherhood and given a global platform by Al Jazeera, issued explicit religious rulings permitting suicide bombings against Israeli civilians while describing the attackers as martyrs. He also defended the death penalty for apostasy. Those opinions were not fringe notes; they were delivered in widely watched programmes and fatwa collections that reached millions.
Anwar al-Awlaki, the American-born cleric who joined al-Qaeda in the Arabian Peninsula, produced English-language lectures and the online magazine Inspire that directly instructed readers on bomb-making and targeted attacks in the West. Investigations linked his material to multiple plots and attacks, including the Fort Hood shooting and the attempted Christmas Day bombing of 2009. His case showed how a single articulate preacher could radicalise audiences who never entered a training camp.
Osama bin Laden and Ayman al-Zawahiri used fatwas and video addresses to declare war on civilians as well as soldiers, citing Quranic verses and historical precedents for killing those they classified as enemies of Islam. Abu Bakr al-Baghdadi’s proclamation of a caliphate in 2014 was accompanied by systematic media output—execution videos, sermons, and pamphlets—that presented enslavement, beheading, and suicide operations as authentic practice. Islamic State provincial affiliates in Africa and Asia continue to recycle that material.
State religious authorities have also propagated hard-line positions. Iran’s revolutionary leadership, beginning with Ruhollah Khomeini, exported the doctrine that certain offences against Islam justify extraterritorial violence; the 1989 fatwa calling for the killing of Salman Rushdie is the clearest public example. Saudi textbooks and mosque sermons, before later revisions, long contained passages denigrating non-Muslims and endorsing harsh hudud punishments; researchers documented their spread through funded institutions abroad.
In Europe and the Indian subcontinent, more local figures repeated the pattern at street level. Anjem Choudary in Britain publicly praised jihadist attacks and was later convicted for inviting support for the Islamic State. Preachers in parts of Pakistan and Kashmir have for years described armed militancy as a religious obligation in mosque addresses, contributing to the radicalisation that accompanied the expulsion of the Kashmiri Pandit community and subsequent decades of insurgency. Similar sermons have surfaced in investigations of European networks after the Paris, Brussels, and Manchester attacks.
The common mechanism is repetition through trusted channels: mosque pulpits, satellite television, pamphlets, and social-media clips that present scriptural citations as unambiguous commands. Listeners who accept the speaker’s authority often encounter little organised counter-argument inside the same institutions. That is the practical route from extremist propagation to a wider social environment in which violence can be contemplated as piety rather than crime.
Public condemnation from the wider Muslim community is necessary because the perpetrators and their ideologues claim to act in the name of Islam and for the benefit of the ummah. When that claim is left unanswered, or is answered only with generalities, it continues to function as a recruitment tool.
Many Muslims already reject these attacks. Victims of Islamist violence in Pakistan, Iraq, Afghanistan, Nigeria, and elsewhere are overwhelmingly Muslim. Individual scholars, families of attackers, and some national governments have issued clear denunciations after major atrocities. The gap is not the total absence of any Muslim voice. It is the scarcity of consistent, specific, and institutional rejection that names the religious justifications rather than dissolving them into foreign-policy grievances or isolated mental illness.
Effective condemnation has identifiable features. It states that deliberately targeting civilians—whether on a plane, in a market, or at a concert—is murder, not martyrdom. It rejects the rulings of figures who have licensed suicide attacks, death for apostasy, or armed supremacy as normative Islam. It does not pivot within the same sentence to a list of political complaints that are presented as explanation or mitigation. Mosques, seminaries, and representative bodies repeat it, not leaving it solely to private individuals who then face social ostracism.
The practical cost of silence or deflection is visible in case after case. Investigations of plots in Europe, South Asia, and the Middle East frequently find that warning signs—obsessive consumption of extremist sermons, praise for prior attackers, refusal to accept national law over religious command—were noticed inside families or congregations and not reported. Community leaders who respond to cartoons or security legislation within hours often take days, or offer only pro-forma statements, when the perpetrator quotes scripture. That asymmetry signals to both potential recruits and the surrounding society that the ideology itself remains negotiable.
Reform-minded Muslims who do speak plainly are routinely accused of washing dirty linen in public, of supplying ammunition to outsiders, or of apostasy. The accusation reveals the priority: protecting the reputation of the collective over disrupting the pipeline that produces the next attacker. Kashmiri Muslims who lived through the jihad of the 1990s, Iraqi and Syrian civilians who endured Islamic State rule, and ex-Muslims who publish detailed critiques have described the same mechanism—internal dissent is costlier than external violence.
The October 2026 Flydubai incident supplies a current illustration. An Omani first officer allegedly tried to crash an airliner full of civilians after what Israeli officials described as Islamist radical indoctrination. A condemnation that matters would come promptly from Omani religious authorities, from pilots’ associations in Muslim-majority states, and from international Muslim organisations, and would state that no reading of jihad authorises the mass killing of passengers. Statements limited to “Islam means peace” or to demands that investigators avoid “Islamophobia” leave the doctrinal claim unchallenged.
Wider community action is therefore not a demand for collective guilt. It is a demand that those who claim religious authority withdraw legitimacy from the men who keep attempting these acts. Without that withdrawal—in sermons, curricula, fatwa councils, and public leadership—the supply of radicalised individuals continues, and each new plot is treated as an aberration rather than the predictable product of ideas that remain socially protected.
