It doesn't matter. It's generally enough in diplomatic channels that if an American could access a service, the U.S. will treat it as if it has been used by one

It doesn't matter. It's generally enough in diplomatic channels that if an American could access a service, the U.S. will treat it as if it has been used by one. As I understand, this is why an American in Europe can have a hard time creating an account. In order to operate in that country without triggering treaty clauses, there has to be a technical or process measure to keep U.S. customers abroad out. Otherwise that state is obligated by treaties to consider that business in breach of U.S. sanctions.