Very interesting…. with Japan holding a lot of US debt in its hand, it may be the samurai that will finally be able to stop the cowboy that is US government :
Japan threatens huge dollar sell-off
Another possible player are the Arab governments – if they’re brave enough to switch to Euro for their oil transaction, USA will be significantly weakened. But they’re a bunch gutless cowards at the moment, so US gov’t got nothing to worry about regarding them.