“Ukraine” and Troy.

The corn route across the Black Sea and through the Bosphorus was a major economic cause of the ancient Hellenic wars, including the semi-legendary Trojan War and the very real Pelopponesian War.

Mythologised as a war over a pretty woman, historical materialists know that no wars have ever been caused by romantic interest, but are ruthlessly economic. And so it was also in the ancient world.

Troy (and the site proclaims a history of conflict) sat at the centre of the corn route between what is now Ukraine and the Greek city states. Later, those same states would fight each other over that crucial area covering the Bosphorus and the coast of Asia Minor, now Turkey (see Xenophon, History of My Times). That later horrendous conflict would mark the end of the city states in an orgy of mutual destruction (see Thucydides) and leave Greece open to Philip’s Macedonian expansionism.
Only a society in which Earth’s necessary resources are free and commonly administered rationally and sanely by society as a whole will end war forever. Socialism will automatically achieve this.