Boxed in at the Dock The port of Piraeus has been the strategic jewel at the heart of Greece for 2,500 years—and now, it has become a showcase in action of China's Belt and Road Initiative. The port has been majority-owned since 2016 (and operated since 2009), by China Cosco Shipping, a state-owned giant, and the purchase of the port threw Greece an economic lifeline when it needed it most. Now, Fortune's Vivienne Walt tracks what Greece gave up in return. Fortune