Political commentator B. Bruce-Briggs once wrote the following in the Wall Street Journal: "This is not to say that the case for international free trade is invalid; it is just irrelevant. It is an 'if only everybody ... argument.... In the real world almost everybody sees benefits in economic nationalism." What do you think he means by "economic nationalism"? Do you agree that a country benefits from free trade only if every other country also practices free trade? Briefly explain.