Keynes had come to believe that the problem was really much simpler: Unemployment was a breeding ground for fascism. It created dangerous political instability and a source of anger that could easily be weaponized. The terms of trade might help or hurt efforts to establish international goodwill, but tariffs or no tariffs, the legitimacy of an international economic order depended entirely on whether it did, in fact, provide for mutual prosperity.

Zachary D.Carter in The Price of Peace