by system failure
The banksters cut the finance of US government, as they completely control the US money supply through the supposed "Federal" Reserve. Obama decided to launch Obamacare, but the super-rich blackmail him because they want to completely dissolve the welfare state to get rid of taxes.
Just as in Greece, the 1% percent seeks further dissolving of the welfare state and privatization of everything because it would be beneficial for them in two ways: get rid of taxes and make big business through privatizations.
Greece is facing accumulated problems to run the health and education sectors efficiently, as the Troika lenders push for massive public sector job cuts and privatizations. In this case, money comes from the European Central Bank, which controls money supply through the whole eurozone. Therefore, ECB banksters coordinated with the global and local big capital to blackmail Greece to take the measures they want, otherwise they will cut money supply to the country. Obama faces a similar situation with the Fed banksters.
"Markets" and speculators attack eurozone countries in order to send them to the ECB trap. Soon, most of the European countries will face the same problems and will be completely dependent on ECB.
It's clearly that we have a war here. We must not forget that they threatened Obama once again when the congress decided the last moment to raise the debt ceiling, and allow government keep running.
Nation-states under attack from the neoliberal dictatorship.