The Eurozone countries are going to help them I suppose. I read in the newspaper that Greece is on the verge of defaulting euro 1.7+ billion and have asked the Eurozone countries to help it with euros 7+ billion.
They will not get any more loans from the Eurozone, period. And if they default on their loans (which looks extremely likely right now), the troika will take retaliatory measures, such as kicking Greece out of the Euro Zone, and seizing the Greek government assets abroad. Everything is just a formality now... No one believes that Greek will make the next payment.
I suppose someone will bail them out of this. It could be US, it has to be US, as China and Russia will try seize the opportunity to get close with Greece if euro zone and america decides not to help it.