Al-Qaeda and its affiliates now command a global force far larger than the one that carried out the September 11 attacks, according to new intelligence assessed by the United Nations, underscoring how the world’s focus on newer conflicts has allowed older extremist networks to regenerate and adapt. The findings suggest that al-Qaeda’s reach, far from diminishing, has evolved into a decentralised and resilient threat that continues to plan attacks against Western targets.
Data compiled by the UN security council’s monitoring team indicates that al-Qaeda and its affiliated groups can now draw on as many as 25,000 fighters worldwide. At the time of the Twin Towers attacks in 2001, the organisation was believed to have roughly 500 members. Even by conservative estimates, the network is now 50 times larger than it was at the moment that reshaped global security policy and ushered in decades of counterterrorism operations.
The figures were presented at a briefing at the Royal United Services Institute ahead of the publication of the monitoring team’s annual report on global terrorism. They are based on intelligence shared by national security services, including Britain’s MI6, and reflect a threat landscape that has grown more diffuse and more complex. Rather than operating from a single command centre, al-Qaeda-linked groups are now scattered across multiple regions, particularly the Middle East and Africa.
Colin Smith, the monitoring team’s co-ordinator, warned that the apparent decline of headline-grabbing attacks in Western cities should not be mistaken for strategic defeat. “They have not laid down their weapons,” he said. “They are still planning attacks against us, they are still plotting. The threat is still there — we neglect that threat or we overlook it, frankly, at our peril.” His assessment reflects a broader concern among security officials that terrorism has entered a multipolar phase, with multiple hubs capable of acting independently.
Unlike the tightly controlled organisation of the early 2000s, today’s al-Qaeda operates through loosely aligned affiliates that exploit local instability. Many recruits, Smith said, are drawn in not by ideological commitment but by poverty, grievance, and financial incentive. This marks a sharp contrast with the group’s earlier incarnation, when members were more likely to be motivated by a shared extremist worldview and direct allegiance to its leadership.
The monitoring team’s report identifies three dominant trends shaping the current threat: a shift in propaganda methods, the decentralisation of command structures, and the ability of groups to adapt rapidly to new technologies and political realities. Terrorist recruiters are increasingly targeting young people, whom they believe are easier to indoctrinate. Intelligence cited in the report includes cases of children as young as 11 being recruited into extremist networks.
Technology has accelerated this process. Groups linked to al-Qaeda and similar organisations are producing highly methodical online content, including videos that explain how to build armed drones or manufacture liquid explosives. These materials circulate widely across digital platforms, lowering the barrier to entry for would-be attackers and expanding the pool of individuals capable of carrying out violence without direct training.
Financing has also evolved. The report highlights a growing reliance on ransom payments for kidnapped individuals, providing militant groups with substantial funds to purchase weapons and equipment. In Yemen, al-Qaeda in the Arabian Peninsula struggled to pay fighters’ salaries as recently as 2024, but that constraint has eased. The group is now exploring maritime operations alongside external attacks, signalling renewed ambition.
Another destabilising factor is the uncertain fate of thousands of Islamic State prisoners and their families held in detention camps in northeast Syria. Although separate from al-Qaeda, their potential escape or release adds to the overall threat environment. Smith noted that in just two camps there were 8,500 foreign nationals, and that even a small number returning home could pose serious security risks. “It doesn’t take many of them to escape, be released or go back home to cause significant problem or threat in our home countries,” he said.
Children living in camps such as Al-Hol have grown up surrounded by radical ideology, violence, and deprivation, raising fears that these environments could serve as incubators for the next generation of extremists. The long-term consequences of leaving such populations in legal and political limbo remain unclear, but security officials warn that inaction carries its own dangers.
Despite these warning signs, counterterrorism has slipped down the list of global security priorities. The war in Ukraine, the conflict in Gaza, and rising tensions with China now dominate strategic discussions in many capitals. While intelligence agencies continue to devote significant resources to monitoring terrorist threats, experts caution against allowing other crises to eclipse conflicts where extremist groups are embedded.
Dr Joana de Deus Pereira, a senior research fellow at Rusi Europe, warned that neglecting such conflicts could have deadly consequences. She argued that traditional terrorist organisations have demonstrated remarkable resilience, surviving leadership losses and military pressure by blending into local dynamics. Their growing use of artificial intelligence, she added, is increasing both the speed and scale at which they can operate, from recruitment to operational planning.
The UN monitoring team occupies a unique position in this landscape. It is the only body with a mandate from the security council to engage directly with intelligence agencies around the world, giving it a rare global overview of evolving threats. While political divisions often paralyse the council on other issues, counterterrorism remains an area of broad consensus among its permanent members.
That agreement reflects a shared understanding that groups like al-Qaeda thrive on complacency and distraction. Two decades after 9/11, the threat no longer looks the same, but the underlying danger persists. As the UN’s findings make clear, the question is not whether these networks still exist, but whether the international community is prepared to confront a threat that has quietly grown larger, more fragmented, and more adaptive than ever before.
