Are we seeing the birth of a euphemism?
"Economic nationalism" is coming from the left in the US and now from Russia. It is used as a counter to global trade. Not far away is "economic egoism" coming from the desk of US Secretary of Commerce Pancho Villa.
"Economic nationalism" seems to mean putting one's country's interests first in dealing with trade. The rumbling undercurrent of national socialism in the phrase signals we're dealing with the fashioning of a new hammer for an old nail.
I'm a free trader, but I don't think those who ride to the sound of their own gums, and that's you Mr Buchanan, will be dissuaded by being compared to Nazis and that goes double for Mr Buchanan.
But it's not just free trade. The devaluation of the dollar is a form of economic nationalism as is 'buying locally.'
These aren't necessarily bad and don't deserve such a Cold War appellation.