Europe’s quiet war: hybrid threats, drone intrusions, and the new travel frontier

For much of the past decade, Europe has been viewed as a relatively stable theatre for international travel and business operations. Yet beneath the surface, a form of quiet conflict is taking shape. Hybrid tactics, cyber intrusions, drone overflights, sabotage, GPS jamming, and disinformation are increasingly being deployed against European states. These activities are unlikely to trigger the headlines associated with large-scale war, but they represent a growing category of security risk that travellers cannot ignore.

Recent months have seen a series of incidents that illustrate this evolution. Denmark’s intelligence services warned in October 2025 of a “high risk” of sabotage against military installations. Drone incursions have been reported in the Baltic and North Sea regions, some near critical energy and port infrastructure. Civil aviation authorities in Northern Europe continue to report GPS interference, most likely linked to hostile electronic warfare capabilities operating from neighbouring states. Alongside this, cyberattacks on government and transport networks in Poland, Finland, and Latvia have disrupted border flows and caused temporary suspensions of air traffic systems.

These developments suggest that Europe is most likely entering a prolonged phase of low-intensity, grey-zone conflict. The intent appears to be to undermine NATO and European Union (EU) member states without triggering an outright military confrontation. The risk profile is subtle but significant: disruptions to infrastructure, slowdowns at borders, and sudden air traffic issues that catch travellers and organisations off guard. For insurers, the difficulty lies in recognising that risk in Europe is no longer binary – safe or unsafe – but instead fluid, situational, and often opaque.

Insurance and assistance implications

For the travel and health insurance sector, hybrid threats expose weaknesses in traditional policy frameworks. War and terrorism exclusions were not designed to accommodate sabotage, cyber outages, or deliberate interference with navigation systems. The result is a grey area where incidents may not clearly fall under any existing clause, leaving insurers and clients uncertain as to where liability lies.

Operationally, the impact is most likely to be indirect but still material. GPS jamming or drone interference could delay or divert commercial flights, stranding passengers. Border slowdowns caused by cyberattacks or political flare-ups could result in detentions or missed connections. Disinformation campaigns have already sparked protests and civil unrest in several capitals, placing business travellers at unanticipated personal risk. None of these events resemble conventional war, yet each creates real exposure.

Assistance providers will face particular challenges. Evacuation from a European capital during a cyber blackout or transport shutdown requires a different playbook from crisis response in a declared war zone. Coordination with local authorities, the ability to escalate rapidly when critical infrastructure is disrupted, and strong communication redundancies will be decisive.

Practical steps are available. Insurers may wish to review policy wordings to clarify the treatment of sabotage, cyber-related disruption, and hybrid events. Scenario planning for European contingencies should be reintroduced; focusing only on the Middle East or Africa is increasingly misaligned with actual risk. Organisations can stress-test their networks by asking assistance partners to demonstrate how they would respond to a cyber outage, or a sudden closure of Schengen area airspace.

Summary

Europe’s ‘quiet war’ is unlikely to produce front-page battlefield images, but its consequences for travellers are real. Hybrid tactics, deliberately ambiguous and below the threshold of open war, have the potential to disrupt mobility, confuse liability, and expose gaps in assistance delivery. For insurers and organisations, the imperative is to adapt frameworks, harden support structures, and acknowledge that Europe’s security environment is no longer as predictable as it once appeared.