From Adriatic: A Concert of Civilizations at the End of the Modern Age, by Robert D. Kaplan (Random House, 2022), Kindle pp. 272-274:
The end of World War II brought not peace but a civil war lasting until 1949, between the Communists and the ultimately victorious right-wing loyalists, which resulted in 80,000 dead and 700,000 internal refugees. Because of the brutality on both sides, particularly against civilians, Greek politics would remain polarized for decades, divided between parties of the hard Left and the hard Right, so that a modern liberalism and a modern conservatism would find little room to emerge. Thus did Greece, abetted by its geography—as close to Moscow as to Brussels—become an ideological battleground of the Cold War.
Greece’s Cold War years were marked by weak governments as well as deep, internecine political divisions, which were further aggravated by the independence struggle on Cyprus, with its consequent calls for Enosis (or union) of the island with Greece. (Of course, this itself was an echo of the Great Idea.) In 1967, junior officers staged a coup, toppling the Greek government in Athens. This led to a particularly brutal seven-year military dictatorship in which the Athens “Regime of the Colonels” bore greater similarities to those of the Third World than to any government in Western Europe. The Colonels’ regime dissolved in 1974 after their failed political intervention in Cyprus led to a Turkish invasion and occupation of the northern part of the island.
It was only with the reestablishment of democracy in July 1974 under the conservative politician Constantine Karamanlis (who had returned to Greece from exile in France) that Greek politics began slowly—for the first time in history—to stabilize and achieve a modern, Western character. Greece, the birthplace of the West, finally reentered the West. This process was helped by the country’s admission to the European Economic Community (later the EU) in 1981.
Like membership in NATO, membership in the EU and Greece’s subsequent admission to the Eurozone represented purely political decisions on the part of the Western alliance. In fact, neither Greece’s bureaucratic institutions nor its economy was ever up to the standards of core-Europe and the West. Yet, it was felt (if never publicly admitted) that leaving Greece outside European institutions, given the country’s vulnerable geographical position and its long history of instability, would pose a greater threat to the West than bringing Greece inside them. As it turned out, the Greek variant of the Great Depression, in which the country was brought to its knees beginning in 2009 by widespread poverty, a dramatically declining GDP, and mass unemployment—leading to a far-left-wing government initially close to Moscow—was directly related to the country’s abject lack of preparedness for the rigors of the Eurozone. The Byzantine and Ottoman legacies of underdevelopment, while not determinative and always able to be overcome, still counted for something in Greece in the second decade of the twenty-first century.