давность дружбы - 友谊悠久

давняя дружба

两国之间的边界争论，比起两国的悠久友谊来说，是一个暂时性和局部性的问题。

Compared with the long-standing friendship between the two countries, their boundary dispute is only an issue of a temporary and limited nature.

为永久友谊干杯！

За вечную дружбу, до дна!