OPINION — The global terrorism landscape in 2026 — the 25th anniversary year of the 9/11 terrorism attacks — is more uncertain, hybridized, and combustible than at any point since 9/11. Framing a sound U.S. counterterrorism strategy — especially in the second year of a Trump administration — will require more than isolated strikes against ISIS in Nigeria, punitive counterterrorism operations in Syria, or a tougher rhetorical posture.
A Trump administration counterterrorism strategy will require legitimacy: the domestic, international, and legal credibility that leverages a wide-range of counterterrorism tools, while engendering international counterterrorism cooperation. Without legitimacy, even tactically successful counterterrorism operations risk becoming illusory, politicized, and ultimately self-defeating.
The terrorist threat landscape
Extremist violence no longer conforms to clean ideological lines. Terrorist objectives and drivers are muddled in ways that are hard to understand — but evolving. There’s little ideological purity with those radicalizing in today’s extremist milieu.
At the same time, state-directed intelligence officers increasingly behave like terrorists. Russian intelligence-linked sabotage plots blur the line between terrorism and hybrid warfare. Islamic Revolutionary Guard Corps officers provide hands-on training to Lebanese Hizballah commanders. Addressing these kinds of risks requires legitimacy, too, especially among allies whose intelligence cooperation, legal authorities, and public support are indispensable.
Nowhere is this threat picture more tenuous than in the Middle East. Hamas’s October 7, 2023, attacks triggered a profound rebalancing of power in the region. Yet, Syria remains unfinished business. Power vacuums there invite foreign jihadists, threaten Israel's border communities, and create future opportunities for Iranian influence to rebound.
A modest but persistent U.S. presence in Syria with a friendly Ahmed al-Sharaa-led government remains a strategic hedge against an Islamic State resurgence, and is a strong signal of U.S. commitment that helps sustain partner confidence. The U.S. counterterrorism presence and alignment with al-Sharaa is not without its risks, though: in December, three Americans were killed by a lone ISIS gunman in central Syria. The country is, and will continue to be, plagued by sectarianism and terrorism, which means that restoring control over a deeply fractured Syria remains fraught.
Taken together, the current transnational terrorism threat landscape is volatile and difficult to predict, a challenge compounded by resource constraints. In such an environment, legitimacy becomes a force multiplier. A belief that America is a ‘force for good’, credible messaging, and confidence that U.S. government action is perceived as just, can go a long way.
This is not an abstract concern. Terrorism today thrives in contested information environments, polarized societies, and fragile states. In short, transnational jihadist networks now coexist with domestic violent extremists, and online radicalization ecosystems that blur the line between terrorism, insurgency, and hybrid warfare. Terrorist propaganda continues to resonate with individuals in the West, especially younger generations who radicalize online. In this environment, legitimacy is no longer a secondary benefit of sound strategy—it is a core guiding principle.
The Trump administration's counterterrorism approach
We are looking for more clarity on the trajectory of Trump 2.0 counterterrorism efforts. It’s still, premature to consider a strategy that has yet to be formally articulated, as many in the counterterrorism community eagerly await its release. History offers a useful reminder. The first Trump administration did not publish its National Strategy for Counterterrorism until its second year. When it appeared in 2018, critics and supporters alike acknowledged that it reflected professional judgment rather than ideological excess. That document recognized terrorism’s evolution and called for strengthening counterterrorism partnerships within the U.S. government, but abroad as well, with a range of longstanding allies.
What gave that strategy durability was its legitimacy. Authorities were grounded in law, threat assessments were evidence-based, policies were stress-tested for faulty assumptions, and foreign partnerships were treated as strategic assets rather than transactional relationships.
When the Biden administration publicly released a set of redacted rules secretly issued by President Trump in 2017 for counterterrorism operations — such as “direct action” strikes and special operations raids outside conventional war zones — those guidelines explicitly acknowledged the power of legitimacy. Counterterrorism succeeds when allies trust the U.S., and the American public believes force is used proportionately and lawfully.
That legacy of trust matters now more than ever, given signals that a second Trump administration could overcorrect on its counterterrorism priorities by redirecting and focusing resources on far-left extremist groups such as the Turtle Island Liberation Front (TILF) or Antifa, while downplaying far-right extremism—or being distracted from the more dangerous terrorism threats from ISIS and other violent jihadists. As the world recently witnessed during the holidays, from Bondi Beach to Syria, ISIS remains a threat. Far-Left terrorism in the U.S. is on the rise, but far-right terrorism accounts for greater lethality than did the left. And still, after 25 years, it’s ISIS and al-Qa’ida that remain the most persistent and enduring transnational terrorism threat against U.S interests.
The Trump National Security Strategy
It’s concerning that the recently published National Security Strategy (NSS) only tepidly addresses transnational terrorism, but notably links terrorism with cross-border threats and hemispheric cooperation against things like “narco-terrorists,” blurring the traditional separation between transnational organized crime and terrorism.
Still, the Trump administration’s emphasis on drug cartels is justifiable, if it does not detract from broader counterterrorism objectives, such as the ISIS or hybridizing terrorist threats that continue to emerge. Commentators claim, however, that the Trump administration is already losing sight of the ISIS and al-Qa’ida threats, though settling that debate here is quixotic at best — only time will tell.
Besides jihadi threats, the U.S. does not need the unintended consequences and risks of triggering a cycle of cartel retaliation – or provoking greater far-left violence – down-the-line in the U.S. homeland.
Contrastingly, the 2017 National Security Strategy saw radical Islamist terrorism as one of the priority transnational threats that could undermine U.S. security and stability. The strategy highlighted groups such as ISIS and al-Qa’ida as continuing dangers, stressing that terrorists had taken control of parts of the Middle East and remained a threat globally.
The Cipher Brief brings expert-level context to national and global security stories. It’s never been more important to understand what’s happening in the world. Upgrade your access to exclusive content by becoming a subscriber.
Addressing transnational terrorism during the first Trump administration required discipline and steadiness amid predictable frictions at the National Security Council (NSC) among policymakers who wanted a more rapid shift toward other priorities, such as great power competition. Still, terrorist labeling and designations, strategic messaging, and resource allocation for counterterrorism were grounded in evidence rather than politics.
So, overhyping some threats while minimizing others undermines legitimacy, invites backlash, and weakens the very moral authority needed to operationalize a cogent, thoughtful national security strategy. It also erodes trust between the government and the public and leads citizens to second-guess whether they are being told the truth or being led astray. The 2017 NSS carried weight precisely because it was grounded in intelligence, not politics. Moreover, the NSS helped frame the counterterrorism strategy that followed and proved highly effective in keeping Americans safe.
Drawing lessons from the 2018 National Strategy for Counterterrorism
The 2018 National Strategy for Counterterrorism (NSCT) remains a useful foundation for the second Trump administration—not because the world is unchanged, but because it embraced balance. The strategy emphasized foreign partnerships, non-military tools, and targeted direct action when necessary. It recognized a central legitimacy principle: the United States cannot and should not fight every terrorist everywhere with American troops when capable counterterrorism partners can do so in their own backyards, with local consent, and a more granular understanding of the grievances that motivate these terrorist groups and their supporters.
And still, U.S. counterterrorism pressure through direct action remains a necessary tool to disrupt terrorism planning. It seems that the second Trump Administration is following the playbook of the first Trump administration in terms of aggressive counterterrorism kinetic strikes in places like Somalia, Yemen, and Iraq.
President Trump rescinded Biden-era limits on counterterrorism drone strikes, allowing the kind of flexible operational framework used for counterterrorism throughout the President’s first term. Thus far, in the aggressive counter-narcotic campaign in international waters off Venezuela, the standoff U.S. strikes resemble counterterrorism operations in Yemen and Somalia during the first Trump administration. Operationally, direct action remains an indispensable counterterrorism tool for disrupting terror groups overseas, and more U.S. direct action will likely be necessary in West Africa and the Sahel to keep jihadist groups operating there off balance, forcing them to devote more time and resources to operational security.
But pressure without legitimacy is counterproductive. What works against jihadist networks does not necessarily translate cleanly to drug cartels or transnational criminal gangs. So, policymakers must be circumspect that expanding the scope of counterterrorism authorities and terrorist designations to canvas drug cartels, risks the unintended consequences of triggering destabilizing cycles of violence in the future, and straining more traditional counterterrorism resources.
Coming full circle, in light of the U.S. capture of Nicolás Maduro for narcoterrorism-related offenses, the idea of legitimacy will be fiercely debated in the days and weeks ahead. If the Trump National Security Strategy is the roadmap for focusing on narcoterrorism in the Western Hemisphere, then the need for publishing a clarifying and rational U.S. counterterrorism strategy for the rest of the world takes on even greater sense of urgency.
Pushing a boulder uphill
Drawing on past counterterrorism lessons to find a comprehensive strategy—from the Bush administration’s wartime footing, through 8 years of Obama counterterrorism work, to President Trump’s "war on terror" — is a Sisyphean task. But, in the wake of over two decades of relentless overseas counterterrorism work, a few ideas have come into sharper focus:
After more than two decades of counterterrorism, loosening the Gordian knot of modern terrorism requires balance, far greater clarity, and consistent, predictable national leadership.
Above all, counterterrorism strategy requires legitimacy. Without it, counterterrorism becomes reactive and politicized. With it, a Trump 2.0 counterterrorism strategy can still be firm, flexible, and credible in a far more dangerous world.
The Cipher Brief is committed to publishing a range of perspectives on national security issues submitted by deeply experienced national security professionals. Opinions expressed are those of the author and do not represent the views or opinions of The Cipher Brief.
Have a perspective to share based on your experience in the national security field? Send it to Editor@thecipherbrief.com for publication consideration.
Read more expert-driven national security insights, perspective and analysis in The Cipher Brief, because national security is everyone’s business.
