"In identifying these mutual interests, the report suggests that there is insufficient public knowledge of the facts. The media often reports on the threat that the South’s growing industries pose to the North’s markets, without mentioning the North’s markets in the South, and how trading with the South accounts for a large share of jobs in the North and keeps prices affordable for consumers.The report underlines the political reasons for working against mutual interest. In order to redress the imbalance, it must be accepted that both sides cannot benefit equally - a fact which often cases prevents successful economic negotiations."
January 1, 1970
https://en.wikiquote.org/wiki/Brandt_Report