Piraeus of social problems also emerged with the concentration of new populations in the suburbs of the old city, such as Nikaia, Keratsini, Drapetsona and Korydallos. The involvement of Greece in World War II came as a major setback to the city's progress. After the war, the city began its development once more, as damage to the port and the city were repaired and new additions took shape after 1955. Piraeus is now the third largest municipality in Greece; the city proper with its suburbs form the Piraeus urban area, which is incorporated in the Athens urban area, thus making Piraeus
Port of Piraeus the Greek government-debt crisis started in late 2009 the Greek government planned to privatize several state-owned assets. These assets are believed to be worth around 50 billion euros. One of these assets is the port of Piraeus. In October 2009 Greece leased docks 2 and 3 from PPA to the China Ocean Shipping (Group) Company (in short: COSCO) for a 35-year-period. For its presence at the port COSCO is paying 100 million euros every year. Terminal 1 is operated by PPA S.A. and has a capacity of nearly 1 million TEUs. Terminal 2's capacity is 3 million TEUs and is