Right now there is hardly a place in the world that has the potential to collapse into anarchy.
Anarchy is something that has to exist where there are people with a philosophy of anarchism. Do you understand that? Now show me the groups in Greece who specifically have an anarchist philosophy.
This is nothing but propaganda for those reasons I've just outline, and you should be careful not to swallow state propaganda like that. Even New Hampshire, with the highest population of people who would consider them selves in support of a government free solution, still only has a tiny number of anarchists (a minority even within the Free State Project).
Given those kind of numbers, I'm embarrassed for anyone who laughably says that an anarchy is being set up in Greece. Laughable and wrong. If anarchy is defined as complete chaos, then sure. If anarchy is defined of a group of people with anarchist philosophy, then not even remotely close to being remotely correct.