Greece actually gained territory after WWII. Whay are they pissed at the US? We even helped the pro-western faction in their civil war that followed.
The article suggests that that "pro-western faction" was a dictatorship, so sort of akin to the various cases in Latin America where a dictatorship was picked over a Communist [dictatorship].
Yes, Greece gained the Dodecanese Islands (which had been under Italian control) after WWII. It would make more sense to focus their anger on Britain--it was the Brits who intervened at the end of WWII to prevent a Communist victory in the civil war (eventually Truman came to Britain's aid). During the Cold War Turkey seemed to be a more dependable ally for the US--Turkey had its own reason to be anti-Russian, whereas Greece shares an Orthodox heritage with the Russians.
Weren't the Greeks (as well as the Bulgarians, Macedonians, Serbs, etc.) under the heel of the Muslims for hundreds of years? Wasn't it the "evil" western powers who freed them from their yoke of oppression during WWI?
How quickly they forget.