Another and more immediate concern is that anything which contains subcomponents/subsystems or parts from US origin companies runs into ITAR and MTCR [1] issues with the US federal government. There's a number of very complex European origin final aviation/aerospace industry products which are laden with US-origin components. I wonder about exactly how "non-US" this Isar rocket is.

[1]: https://en.wikipedia.org/wiki/Missile_Technology_Control_Reg...

I would put it as a much greater likelihood that the US would decide to mess with export-control permits for various subsystems than a theoretical scenario where they begin intercepting western European flagged cargo ships on the way from Europe to French Guiana.

Yeah but although the crazies in charge have been very negative toward our continent and my country (Frace), they've also steered very clear away from any seizing claim about any of our territory, despite going against anyone from Canada to Denmark to Spain to UK, to ...

Deep down, we're an annoyingly arrogant little country with delusions of grandeur salivating at the thought to prove to our EU neighbors how strong we meant it when we said we would accept to oppose the US in case of military attack and I think they knew we may actually mean it and not back down when it start (see also: Denmark leak about how France was essentially willing to provide whatever to help defend Greenland).

I'm not saying this in a "we're awesome" way, more like a hard case of the TACO, bullies avoid the ones who punch back. Nothing would be happening in Iran right now if they had not believed in advance Iran would lie down like Venezuela did after losing its leader, though most would say confusing the two situation makes no sense.

Ultimately this is so much lost time and resources for nothing of value, it's so utterly disappointing...