Western analysts have frequently regarded Soviet friendship and cooperation treaties as defining relations of alignment between the treaty parties.

Today, the two umbrella organizations are tightly linked by a cooperation treaty.

Say we'll accuse them of breaking all our cooperation treaties.

They also concluded a cooperation treaty on 17 June 1991.

Libya and the Soviet Union sign a cooperation treaty.

Russia and China signed a friendship and military cooperation treaty in July.

He signed a cooperation treaty with neighboring Slovakia, where 600,000 Hungarians live.

We would like to see a new trade and cooperation treaty replacing that of 1985 and including the standard human rights clause.

The two countries signed their first friendship and cooperation treaty in 1986.

The two countries nullified their earlier friendship and cooperation treaty in 1995.