You really do put a lot of faith in the idea that Bitcoin would even play a role in current world politics,

get your head out of the bitcoin world man, its really not that important yet, its only an $11billion market cap, if the Chinese destroyed it tomorrow which is a load of crap anyway (why would they do that) the american government wouldn't bat an eyelid and most Americans would prob say, "whats bitcoin" if they even heard about it on the news.......

lol
I sincerely hope that Bitcoin won't become a tool in the international politics. I myself reiterated it a few times that Bitcoin is negligible at worst and marginal at best, at least, for the present, but this alone still doesn't exclude the possibility of China manipulating Bitcoin this way or another. We already heard rumors about the Chinese authorities going to set up capital flow barriers preventing Bitcoin from leaving China. These rumors seem to have not been confirmed, but why would they even care if Bitcoin is thus insignificant? If transactions cannot be traced to the country of origin by any means possible (which I doubt), then it's fine, and we can safely forget about the Chinese miners discriminately raising fees as part of the future tariff wars...
But as I understand the matter, it is still possible to distinguish transactions by the wallet address of the source, right?
Yeah, we hope so. Bitcoin should not be involved in current world politics within US and China which could affect bitcoin stability and price fall down. I don't think it's a good move and doubt China government would do such thing to ban US bitcoin transaction. Nothing to do about it that could damage to US as they see it just digital currency not their dollar. Just hope those problems not happen in anyway and any time.