That wording sounds like the decision was made in Israel and not the US.
I would guess the shutdown requests came from Israeli security services. Thus it is final and not appealable and can also the reasoning can not be revealed.
Microsoft have to choose whether to operate in the EU. There's been a long struggle between conflicting rules of US unaccountable intelligence access vs. EU privacy law ("safe harbour") that is relevant here. https://blogs.microsoft.com/on-the-issues/2015/10/06/a-messa...
The combined armies of every member state of the EU, if it came to that.
Well before that point, they can just go through a normal court process because the EU has been empowered by the governments of each member state to write such legislation.
The decision might just as well have been taken place on the moon, laws such as DSA, DMA, and GDPR tend to protect the resident and rarely cares where a decision affecting that resident was taken.
