The US hasn't blocked other countries from transferring more old F-16s to Ukraine.
On or about 2025-03-07, the US apparently cut off intelligence support for the AN/ALQ-131 electronics countermeasures pods (jammers) carried on some F-16s. Those can still be used but will become less effective without constant software and configuration changes to adapt to changes in Russian radars. Some of that support might have at least partially resumed in recent days but the details haven't been publicly reported.
> The US hasn't blocked other countries from transferring more old F-16s to Ukraine.
Most of those transfers were done in the context of upgrading a fleet (with F-35); They did block the transfer initially.
> On or about 2025-03-07, the US apparently cut off intelligence support for the AN/ALQ-131 electronics countermeasures pods (jammers) carried on some F-16s
If you cutoff a feature of the equipment you sold, it is effectively a kill switch; its not really relevant what was the political rationale of cancelling the subscription. Thing is, this dumb flex move (it is possible to migrate the jammers to european platforms) just killed the F35 commercial roadmap, and will make the just-announced F47 a dud (it will be a struggle to find partnerships on this one with the same terms).
On or about 2025-03-07, the US apparently cut off intelligence support for the AN/ALQ-131 electronics countermeasures pods (jammers) carried on some F-16s. Those can still be used but will become less effective without constant software and configuration changes to adapt to changes in Russian radars. Some of that support might have at least partially resumed in recent days but the details haven't been publicly reported.
https://www.forbes.com/sites/davidaxe/2025/03/07/france-to-t...