I was thinking about this recently, and wondering the EU will start moving away from the USD, further weakening the global strength of USD and America. They are already dealing with BRIC, and the potential of crypto (likely Bitcoin) to remove any single currency as providing power to any country.
The US has benefitted hugely by being the reserve currency, but that strength is also a weakness that can be used against them, but only if the other countries collaborate, which the EU is most capable of.
The US has benefitted hugely by being the reserve currency, but that strength is also a weakness that can be used against them, but only if the other countries collaborate, which the EU is most capable of.