Blame the Chinese - their economy is tanking.
No - in my opinion the Chinese stockmarket is undergoing a correction, nothing at all wrong with the actual Chinese economy, except maybe they are going from a breakneck rate of growth to merely a fast rate of growth.
Meanwhile the Greeks actually have two choices - that the referendum and Greek politicians didn't want to talk about.
1. Have austerity & economic disruption thrust on them by the EU using the Euro currency followed by reform where they go back to work and start paying taxes
2. Have austerity & economic disruption thrust on them by the rest of the world, revert back to the Drachma followed by reform where they go back to work and start paying taxes
In either case - Greece is an insignificant part of the world economy and anyone who lends them money is a certified idiot and will lose their money. I saw some stats saying if Greece left the European Union tomorrow the average age of the EU would go down and the GPD of Europe would actually increase. Germany, Holland and most of the rest of Europe will be secretly glad to be rid of the Greeks and all their attendant debts, problems and troubles.
You have to laugh about the "flight to safety" towards the USD.
Is this the same currency where the US Fed Reserve switched on the printing presses in 2008 and still hasn't turned them off? Still at least the strength in the USD and depreciation in the AUD might allow some Australian businesses and exporters to be globally competitive again.
A little too much liquidity and not enough investment is my diagnosis.