The economic and cultural developement of underdeveloped countries was a pet project of the Soviets. A heavy flow of aid constantly poured into them.
Viet Nam needed reform too, so Red China carried the torch into Viet Nam and helped harvest the rice. They are still in Northern Viet Nam and are eager to carry the torch in a southerly direction.
Since the Soviets had nothing to lose and the West nothing to gain, the Soviets agreed to a summit conference in Geneva which distilled a certain spirit. The spirit was served with smiles at vodka parties, brought great relief to the world, and lingered on for quite a while after the conference.