Agreement between the Government of the Union of Soviet Socialist republics and the Government of the Democratic People’s Republic of Korea concerning the regime of the Soviet-Korean State frontier of 1990.

The State frontier shall begin at the junction of the frontiers of the USSR, the Democratic People’s Republic of Korea and the People’s Republic of China situated in the middle of the river Tumannaya (Tumen) and runs along the middle of its main channel to a point in the mouth of that river. The line of the State frontier between the USSR and the Democratic People’s Republic of Korea shall also divide vertically the airspace and the subsoil. Civilian vessels and naval vessels entering the territorial or internal waters without permission of the competent organs of the Parties or in violation of the established regulations for entry into those waters are considered guilty of violation of the State frontier. The frontier authorities of the Contracting Parties shall, if necessary, on a reciprocal basis and in good time, exchange information on the water level and ice condition of the river, if such information can serve the purpose of averting the dangers posed by flooding or drifting ice. Vessels of both Contracting Parties may navigate in frontier waters only up to the State frontier line, and shall not be permitted to anchor on the State frontier line, or to tie up to the piers of the railway bridge known as Friendship Bridge, except when there are exceptional circumstances (accidents). The frontier authorities of the Contracting Parties shall ensure that the regulations relating to the hunting of wild animals and birds in their territory are strictly observed near the frontier line and that, while hunting is being carried out, shooting in the direction of the frontier or the pursuit of animals and birds across the frontier are prohibited. In areas adjacent to the frontier line, the Contracting Parties shall so conduct their industrial and agricultural operations, forestry and mining as not to harm the economic interests of the other Contracting Party. The Contracting Parties shall, when necessary, conclude separate agreements on questions relating to the preservation of forests, waters and other natural resources in the frontier area and their economic exploration and to the control of forest and agricultural pests.