Perhaps something many USA citizens are not aware of are some of the richest people in the world are from China & Russia and lots of such persons & businesses own large monetary values of land & stocks in USA. If they wished, they could put USA on its knees if they called in a % of those funds. The stock market, the banks could potentially crash considerably worse than any recent decade nightmare. Of course there's other ways they could play a power game to suit both their & their national interests.