Lets pretend this happens, I am curious how it would work.

So a person in Canada messages someone in France who's WhatsApp is not encrypted. But the message from Canada is encrypted. Will the person in Canada's message have to be sent unencrypted ? Or will WhatsApp Canada need to allow France to break Canada's encryption ?

Personally I think it would be easier for these apps to ban people in France from using their service.

They would have used the "ghost user" strategy.

> "Perrin now offers a different framing. “Article 8 ter, which I had adopted, was not at all aimed at obtaining encryption keys but at introducing a ghost participant into a conversation before encryption,” he says. The “ghost participant” approach, sometimes called a ghost user proposal, was floated by GCHQ in 2018 and rejected by every major privacy organization, civil liberties group, and security researcher who looked at it. The idea is that the platform silently adds a third recipient, an invisible intelligence agent, to a supposedly two-person conversation. Users never see them. The encryption technically still works, except that one of the parties is the state."