The 324-mile Tumen River flows from northeast China to North Korea and, toward its end, Russia, ceded to the Russian Empire by China's Qing Dynasty in the 1860s.

By ILLIA NOVIKOV. KYIV, Ukraine — Ukrainian forces have either destroyed or damaged all three of the bridges over the Seym River in western Russia, according to Russian sources, as Kyiv’s ...

The Moscow Times reported impending deals between Russia-China-North Korea to allow that to happen - as proposed by the Kremlin. Here's a map showing the region and the focus is on the Tumen river.

The 324-mile Tumen River flows from northeast China to North Korea and, toward its end, Russia, ceded to the Russian Empire by China's Qing Dynasty in the 1860s.