You could pretend with a flag and treat yearly taxes as a bribe to protect yourself against a foreign power. I guess you would have to pick a EU country and get

You could pretend with a flag and treat yearly taxes as a bribe to protect yourself against a foreign power. I guess you would have to pick a EU country and get them on board. Easier to make your own and try to get EU membership. You would need to sign a treaty for it to be real.