Greece is actually stronger than Bulgaria and Albania, according to this list:
http://www.globalfirepower.com/countries-listing.asp
But yeah, what are they going to get?
Interesting list. But for millenia, the single most important factor in military success has been financing. During the Middle Ages, for example, most wars ended because both sides ran out of money.
Greece, of course, has no money.
I’m trying to think of an example in the modern world where a completely broke country invaded another as a way of dealing with its financial problems. While there may be one, I don’t know what it is.