“U.S. Authorities Can Access Data Stored Overseas,” The Wall Street Journal, March 24, 2018 A6. US warrants will soon reach can information stored by US tech companies on cloud servers overseas.
You now need to know what you have and where you have it; now you have to know who you store it with. Saying that you have it in France and can’t turn it over to the FBI isn’t going to work here. Much like telling the French court that you need to turn it over to the US, despite French blocking statutes that forbid that.
In the event of a conflict, who wins? Is that how you know who is in charge? Are you still going to use a cloud service hosted by a US company?