Tactical Tourism: How Young Extremists Acquire Skills Abroad
When Ibrahim Kayumi, 19, and Emir Balat, 18, were arrested outside New York’s Gracie Mansion carrying improvised explosive devices, the immediate headlines focused on the plot itself. But the more revealing detail may lie in their travel history.
Federal investigators are examining Balat’s extended stay in Istanbul, along with his return from Turkey earlier this year. They are also reviewing Kayumi’s travel to Istanbul and Saudi Arabia in the months preceding the incident. Istanbul in particular has long appeared in Western counterterrorism investigations as a logistical crossroads for individuals moving between Europe, the Middle East, and militant environments beyond.
Prosecutors say the suspects carried devices containing TATP, a volatile compound sometimes nicknamed the “Mother of Satan.” Authorities say the pair cited ISIS inspiration and assembled the devices using materials capable of producing a dangerous blast had they detonated.
TATP is not a compound someone casually experiments with. It is notoriously unstable and difficult to handle safely even for experienced bomb makers. Its appearance in terrorist plots is rarely accidental.
Radicalization may begin at home. The capability to act on it often develops somewhere else.
Which raises a broader question: when individuals radicalized at home suddenly display technical familiarity with explosives, where did that knowledge come from?
A separate case offers one possible answer. In Brooklyn, Asif Merchant, a Pakistani national, was convicted of terrorism and murder-for-hire charges after prosecutors said he attempted to orchestrate assassinations in the United States on behalf of Iran’s Islamic Revolutionary Guard Corps. Authorities say Merchant received training in surveillance and operational tradecraft before traveling to identify targets and recruit accomplices.
Merchant’s case reflects a state-directed version of a broader phenomenon. Extremist capability often develops outside the country where it is eventually deployed.
Western court records describe the same trajectory in a number of cases. Abdirahman Sheik Mohamud, an Ohio resident, traveled through Turkey into Syria where prosecutors said militants provided weapons and explosives training before he returned to the United States and began planning attacks. He later pleaded guilty to terrorism charges.
British authorities have encountered similar paths. Imran Khawaja, a London resident, admitted traveling to Syria where he received firearms training before returning to the United Kingdom, where he was later convicted under terrorism laws.
More recently, prosecutors in Bristol alleged that Mohammed Mohamoud spent several weeks in a militant stronghold in Somalia before returning to Britain and preparing terrorist acts.
European investigators have seen the same pattern before. French militant Mehdi Nemmouche traveled to Syria, joined ISIS networks, received militant training and later returned to Europe, where he carried out the attack on the Jewish Museum in Brussels.
Taken together, these cases reveal a recurring trajectory: individuals radicalized in Western societies travel abroad, spend time in militant environments where training or operational exposure occurs, and then return home.
Call it tactical tourism.
Unlike the foreign-fighter wave that dominated headlines during the Syrian civil war, these journeys are often shorter and more targeted. The objective is not long-term participation in a distant conflict but exposure-acquiring skills, contacts or operational credibility that can later be applied back home.
The infrastructure supporting this pattern is rarely visible. In northeastern Somalia, for example, Islamic State militants operate from bases hidden in the Cal-Miskaat mountain range near Bosaso. There, camps concealed in the rugged terrain have hosted foreign fighters who received training in weapons handling, explosives assembly and operational tradecraft.
British prosecutors say Mohammed Mohamoud, the Bristol suspect, spent roughly five weeks in such an environment before returning to the United Kingdom.
A stay like that does not turn someone into a battlefield veteran. It doesn’t have to. A few weeks can be enough to learn the fundamentals of explosives, establish contacts within militant networks or simply gain credibility within extremist circles.
Which brings the story back to New York.
Two teenagers from Pennsylvania allegedly arrived at a protest carrying explosive devices sophisticated enough to require real technical familiarity. Whether investigators ultimately establish overseas links remains to be seen.
But the pattern behind the case is already familiar to counterterrorism officials. Radicalization may begin at home. The capability to act on it often develops somewhere else.
When those individuals return, consequences tend to follow them.
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