I found these quotes quite appropriate while thinking about recent the world events.
Be friendly with the Russian, but takecare that you have a rock ready on your chest.
Let it be clearly understood that the Russian is a delightful person till he tucks in his shirt. As an Oriental he is charming. It is only when he insists on being treated as the most easterly of western peoples instead of the most westerly of easterns that he becomes a racial anomaly extremely difficult to handle.