Dan Driscoll, the US Army Secretary, led nine nations in signing a counter-uncrewed-aircraft-system letter of intent at Eurosatory on 16 June 2026: Sweden, Denmark, Norway, France, Poland, the UK, the Netherlands, Italy and Lithuania1. Counter-UAS, written C-UAS, covers the detection and defeat of hostile drones, and the plan is a shared marketplace of combat-proven kit targeting 25 nations by the end of summer 2026. The nine signatures represent roughly 36% of that goal, with one season left to close the gap.
A March 2026 US-UK declaration made common C-UAS data standards a mandatory condition for any system listed in the marketplace2. That rule does more than keep the data tidy. A vendor whose sensors and effectors cannot speak the common format cannot get onto the shelf, however capable the hardware, which makes the standard a pre-qualification filter favouring suppliers already wired into US-led architectures.
The mechanism is a quieter form of market power than a sole-source contract, because it reads as technical hygiene rather than industrial policy. Whoever controls the data standard controls shelf access. Global C-UAS procurement had already reached $29 billion in the first quarter of 2026, and an entry rule rather than the contest itself now decides which vendors reach that spend. The marketplace opens access to detectors, radars, low-collateral interceptors and electronic-warfare systems; the standard decides who is allowed to offer them.
