Which is why a) China hasn't managed to get a whole lot of extradition treaties signed, and b) those treaties generally have exemptions for crimes that are cons

Which is why a) China hasn't managed to get a whole lot of extradition treaties signed, and b) those treaties generally have exemptions for crimes that are considered "political". The unusual thing is that the Canada-US extradition treaty allows extradition on such a "political" offense, but that's probably mostly down to the US and Canada having the same position on Iran.