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 Lithuania 1. 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 marketplace 2. 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.
