Greece's current debt problems were created by government officials who used underhanded financial mechanisms to hide the size of the nation's debt and exposure to risky assets from their foreign creditors. Once these problems were revealed, the Greek economy began an endless downward spiral.
In order to protect its own banks from exposure to debts in Greece and other fiscally struggling nations, the European Central Bank created the European Stability Fund to provide bailouts. But these payments are conditional on recipient nations adopting very stiff austerity policies.
The latest round of Greek austerity measures is meeting with violent resistance on the nation's streets. The next vote could support or sink the entire bailout enterprise, with potentially huge consequences for the ECB's financial sectors and the survival of the euro.
There is a limit to how much taxpayers can bear... that limit gets ever closer