Soldiers returning from Ukraine's front line are bringing weapons and military equipment into the European Union, according to a confidential EU document seen by Euronews, raising urgent questions about border security and the long-term consequences of Europe's largest land war since 1945.
"Member states have reported weapon components and military equipment in the possession of returning combatants," the EU Council document says. It adds: "While not necessarily connecting these individuals to organised smuggling activities, these detections demonstrate a potential risk of military components or other battlefield equipment being transported from Ukraine into the EU."
EU ambassadors are discussing the risk of firearms being diverted from the battlefield on Wednesday as European authorities step up efforts to track weapons entering the bloc. The concern extends beyond Russian combatants to include Ukrainians returning from the frontline, particularly in member states hosting large numbers of Ukrainian refugees, such as Germany, Poland and Czechia.
A Security Challenge for Schengen
Authorities in those countries say the security issue relates to the EU as a whole because they're part of Schengen, and that soldiers reuniting with their families are unlikely to sell those weapons legally, Euronews understands. The document warns: "Foreign fighters, either volunteers or mercenaries, continue to pose a risk, as they acquire military skills and experience that could be further exploited once they withdraw from the conflict zone to engage in criminal activities or terrorism."
In recent months, several EU countries have pushed to bar former and current Russian combatants from entering the bloc over potential security risks, including their involvement in sabotage and hybrid attacks on European soil. The ban was included in the 21st sanctions package but was eventually watered down after opposition from France and Italy.
At an informal meeting of foreign ministers earlier this month, EU foreign policy chief Kaja Kallas said there was "broad support" to move forward with the visa ban after an attempted drone attack in Leipzig in which one of the suspects reportedly entered the Schengen area on a tourist visa issued by Italy. Estonia has launched an intelligence-sharing operation with other countries on the so-called eastern flank to pool entry-refusal decisions against identified Russian combatants based on a judicial or administrative ruling.
Long-Term Risks and EU Response
A report published in March by the Global Initiative Against Transnational Organized Crime said there's currently no substantial weapon inflow from Ukraine to neighbouring countries, but weapon circulation remains a "structural risk." Kyiv has already established a National Firearms Focal Point that supplies Europol with lists of seized, stolen or lost firearms.
Frontex, the EU's border agency, has issued specific instructions for border guards and customs authorities on firearm diversion, with a focus on Ukraine. The document says: "One of the most significant long-term concerns in the context of Russia's war of aggression against Ukraine is the proliferation and diversion of firearms and other SALW [Small Arms and Light Weapons]. So far, few weapons have been seized and few arrests made."
Europol, the EU's law enforcement agency, is due to establish a dedicated Firearms Hub by the first quarter of 2027 to improve the analysis and exchange of data on seized weapons. Ukraine is also expected to adopt a dedicated roadmap on firearms trafficking by the end of this year, following the model of one already undertaken in the Western Balkans. Specific benchmarks on the issue have been written into Ukraine's accession negotiations.
Why This Matters:
This isn't just a border security challenge β it's a reminder that wars don't end when the shooting stops. Europe's open borders and freedom of movement are fundamental achievements, but they require trust and coordination that the current crisis is testing. The fact that weapons are already crossing into the EU demonstrates the gap between political rhetoric about supporting Ukraine and the practical security infrastructure needed to manage the consequences of a protracted conflict. Member states can't address this alone β Schengen demands collective action. The establishment of Europol's Firearms Hub and Ukraine's integration into EU firearms tracking systems are steps in the right direction, but they won't be operational until next year at the earliest. In the meantime, border authorities are working with incomplete data and limited coordination. The broader lesson is clear: Europe's solidarity with Ukraine must include not just military aid but also the institutional capacity to manage the war's spillover effects β from refugee integration to weapons tracking to veteran reintegration. These aren't separate issues. They're all part of the same challenge.