In very few cases have these anti-interventionists favored literal “isolation”: what they have generally favored is political nonintervention in the affairs of other countries, coupled with economic and cultural internationalism in the sense of peaceful freedom of trade, investment, and interchange between the citizens of all countries. And this is the essence of the libertarian position as well.
Murray N. Rothbard
For a New Liberty, p. 330
https://youtu.be/qKdnhNMMbHM Marx and his followers have never demonstrated any awareness of the vital importance of the problem of allocation of scarce resources. Their vision of communism is that all such economic problems are trivial, requiring neither...