Greece is going to default. This will mean the Euro collapses. Nations other than Greece within the Eurozone have no option to let Greece default, as in the long run, it will be cheaper for them them let Greece default and have nationally fixed currencies rather than the rest of the world junking the Euro. Expect the reamergence in trade of bonds issued by the German and French governments, along with smaller Northern European nation bonds - basically, we will see trade in the Deutschmark, the Frank and the Krone of several nations very soon. They may not have such names, but they will be nationally protected bonds rather than bond fixed to the Euro.
Next year, oil will no longer be traded in US dollars. This will be in part an American designed policy. Being that China holds so much US debt, the devaluation of the dollar by a large amount will help the US national debt.
You have been warned.