To understand what impact the Trump Administration will have on European economic performance you have to start by re-examining the lessons of the past. Almost 50 years ago, Richard Cooper published a ground-breaking book in the United States called: The Economics of Interdependence. He conceived this book during the early 1960s while he was working as an economic policymaker in the Kennedy and Johnson Administrations, and he developed the argument as part of a high-level study group within the Council on Foreign Relations. These details are important because the message Cooper had to communicate was controversial, particularly coming from a member of the foreign policy establishment. No country, he argued, not even the United States, can ignore how other countries react to their economic policies. The problem is not good diplomacy (or good manners). It is structural. If policymakers ignore how other countries react to what they do, then they will never achieve their objectives – because the reactions of others can do much to offset any benefits a discrete policy action may deliver. Indeed, a country will be worse off going it alone than working with others. Compromise and cooperation are always better than having countries set their economic policies at cross-purposes.
