Nearly every country would be 'sabotaged' then - and rightfully so.
ALL gvts are a sophisticated manifestation of the more lowly protection racket run by the mafia. i.e 'We protect you from harm by the other mafia'.
So individuals have a “duty … to sabotage their country when it becomes immoral” according to individually-defined standards of morality? That seems like an unworkable way to run any society with more than a few people.