The Trans-Siberian Railway (TSR, Russian: Транссиби́рская магистра́ль, tr. Transsibirskaya Magistral; IPA: [trənsʲsʲɪˈbʲirskəjə məgʲɪˈstralʲ]) is a network of railways connecting Moscow with the Russian Far East and the Sea of Japan. With a length of 9,289 km (5,772 mi), it is the longest railway line in the world. There are connecting branch lines into Mongolia, China and North Korea.