[dyed_in_the_wool]

But the Greek City-States haven't had a war for years.
And, no, Cyprus doesn't count.

[Noumenon]

And, no, Cyprus doesn't count

Oh, darn.

[Polybius]

But the Greek City-States haven't had a war for years.

The key word is "States".

In ancient Greece, a city and the surrounding farmland originally constituted a sovereign State.

Now that the geo-political units have enlarged, Greece consitutes a single "State" just like the Athenian Empire included several formerly-independent City-States in one political unit.

The closest "States" neighboring Greece today include Macedonia, Kosovo, Bosnia, Croatia and Serbia where war is a way of life.