Since Russia’s full-scale invasion, dozens of different drone systems, developed by a mix of military units, start-ups, and volunteer networks, have been deployed across the Ukrainian battlefield.
Units have fielded rapidly evolving drone fleets sourced from a range of different suppliers, often adapting systems to their needs in weeks rather than the years such technical advances usually take.
There is no single Ukrainian drone system, and no central selection process determining which platform should be used across the force.
Procurement is fragmented across multiple channels, ranging from state programs to unit-level acquisition and volunteer supply chains. Different systems coexist, evolve, and are replaced in rapid cycles as commanders choose the kit they need. This decentralized approach allows units to adapt quickly to changing battlefield conditions, shortening decision cycles and enabling faster deployment.
Ukraine has succeeded not because fragmentation has been eliminated, but because it has been made to work. The different systems form a functioning operational capability
Europe is trying to solve a different version of the same puzzle, but often in the wrong way.
Across major defense areas, European states continue to search for common solutions: shared platforms, joint procurement programs, or single “European” systems. Integration is assumed to require convergence.
In practice, however, this approach repeatedly runs into obstacles.
This is because defense procurement decisions are not purely technical. They are shaped by national industrial interests, employment considerations, and strategic autonomy. Even where there is agreement on capability requirements, alignment often breaks down at the point of selection.
For example, European states operate different air defense systems with limited interoperability. Germany relies on IRIS-T, while Poland has deployed Patriot systems alongside its own layered air defense programs. Other countries use a mix of legacy Soviet-era platforms and newer Western systems, like the Franco-Italian Aster missile.
While each system is effective in isolation, they are not always interoperable in terms of command integration, data exchange, or logistics, so creating practical challenges when forces need to operate together.
This is often described as fragmentation and treated as a problem to be solved, but Ukraine’s experience suggests a different perspective.
In the face of invasion by a hostile neighbor, Kyiv has shown that the key challenge is not the existence of multiple systems, but whether those systems can be made to work together as part of an operational whole.
Effective defense has not emerged from selecting a single solution but from the interaction of many.
Different drone systems are integrated through shared operational practices, real-time feedback loops, and continuous adaptation. Compatibility is achieved not through uniformity, but through coordination.
In practice, Ukrainian units operate drones from multiple suppliers in the same mission. Systems with different specifications and interfaces are adapted at the point of use, allowing operators to combine capabilities despite technical differences. Compatibility is achieved in the field, rather than being designed in.
Kyiv has shown that in complex and rapidly evolving environments, capability does not depend on choosing the “best” system; it depends on ensuring different systems can work together. And this has direct implications for Europe.
The difficulty of Europe selecting a single system across multiple national industries is unlikely to disappear, and attempts to force convergence risk delay, political deadlock, and duplication across parallel programs.
A more realistic approach is to follow Kyiv and shift the focus. Instead of asking how to choose one system, the question becomes how to make many systems work together.
And that needs a different way of thinking about integration.
At a strategic level, common capability objectives define what needs to be achieved, not which system should deliver it.
At an operational level, smaller groupings of states can move forward where alignment exists, allowing capability development without requiring system-wide consensus.
At a system level, interoperability becomes the key condition. Standards, interfaces, and integration requirements could ensure that different platforms can function together.
Competition between industrial actors would be able to continue, but within defined contexts. States would retain control over procurement decisions, but shared frameworks would ensure compatibility across systems.
This approach is not about removing complexity but accepting it and organizing it.
The lesson from Ukraine is that capability can emerge without central selection, but only if systems are designed to connect.
The challenge for Europe is to make fragmentation work.
Igor Harry Rusnak is an independent analyst and advisor working at the intersection of defense, innovation, and economic systems. His work focuses on how capital, technology, and institutions are translated into real-world capability and competitiveness under conditions of fragmentation, uncertainty, and rapid change. His research examines capability delivery, innovation ecosystems, and the relationship between governance structures and operational outcomes across Europe and its neighboring regions. Rusnak holds an MBA from Edinburgh Business School, Heriot-Watt University, and is based in Vienna, Austria.
Europe’s Edge is CEPA’s online journal covering critical topics on the foreign policy docket across Europe and North America. All opinions expressed on Europe’s Edge are those of the author alone and may not represent those of the institutions they represent or the Center for European Policy Analysis. CEPA maintains a strict intellectual independence policy across all its projects and publications.
