ALEXANDROUPOLI, Greece — It is an unlikely geopolitical flashpoint: a concrete pier in a little coastal city, barely used a few years ago and still occupied only by sea gulls most of the time.
But the sleepy port of Alexandroupoli in northeastern Greece has taken on a central role in increasing the U.S. military presence in Eastern Europe, with the Pentagon transporting enormous arsenals through here in what it describes as the effort to contain Russian aggression. That flow has angered not only Russia but also neighboring Turkey, underlining how war in Ukraine is reshaping Europe’s economic and diplomatic relationships.