Trans-Asian Railway
The Northern Corridor will link Europe and the Pacific, via Germany, Poland, Belarus, Russia, Kazakhstan, Mongolia, China, and the Koreas, with breaks of gauge at the Polish-Belarusian border (1435 mm to 1520 mm), the Kazakhstan-Chinese border (1520 mm to 1435 mm), and the Mongolian-Chinese border (1520 mm to 1435 mm). The 5750 miles (9,200km) Trans-Siberian Railway covers much of this route and already carries large amounts of freight from East-Asia to Moscow, and on to the rest of Europe. Due to political problems with North Korea, freight from South Korea must be shipped by sea to the port of Vladivostok to reach the route.