This is interesting. The normal state of affairs, of course, is for even nominally “radical leftist” governments to cave to the demands of the capitalist class. But the Greek government — so far, at least — has refused to simply cave.
At this point it’s brinksmanship. I would expect at least a few more “temporary” loans to be made before any final outcome happens. And the “final” outcome might not be so final; it may well just kick the can six months down the road. A real final outcome may well be years off.