Its called Reciprocity and its a pretty well-established concept in diplomacy: https://en.wikipedia.org/wiki/Reciprocity_(international_relations) https://en.wi

Its called Reciprocity and its a pretty well-established concept in diplomacy: https://en.wikipedia.org/wiki/Reciprocity_(international_relations) https://en.wikipedia.org/wiki/Reciprocity_(international_rel...