Chinese Wusuli Jiang or Wu-su-li Chiang
River, eastern Asia.
Formed by the confluence of two rivers rising in the Sikhote-Alin Mountains of extreme southeastern Siberia (Russia), it flows north, marking part of the border between Russia and China and joining the Amur River near Khabarovsk. It is 565 mi (909 km) long. In the 1960s, and especially in 1969, Soviet and Chinese forces clashed over large sections of the river border. A limited agreement was reached on navigational use of the river in 1977.