I’m posting in response to your initial post, but I wanted to thank several other posters who have added helpful comments below (and of course, to thank you for posting to begin with!).
I was in Greece a couple of weeks ago, and while they have a justifiable long-standing animosity towards the Turks, I felt that their current concerns are real and not just a grudge.
Several Greeks I met mentioned that the Turkish government of the moment is a serious menace and is trying to build up momentum for challenging Greece in various areas. Perhaps the Turks are just doing this saber rattling for effect, but Greece is spending serious money that it doesn’t have on attempting to protect itself.