Krauze’s questions ASSUME, falsely, that Venezuelan socialism failed — though the nation’s troubles may be (likely are) effects of right-wing or foreign (U.S.) economic and political assaults, rather than a failure of socialist measures. Even if the current socialist regime has failed, one cannot infer, logically, that socialism failed Venezuela.

Brazil’s woes are the NOT the making socialism or socialist programs or measures, but of, e.g., corruption (outside the President’s office and outside her government and her Party), “austerity” measures, and a U.S.-fomented/U.S.-backed coup d’etat outwardly headed by a corrupt man who was (maybe remains) a paid U.S. informant and who has violated election rules and other laws of Brazil.

Argentina’s government is not socialist. http://www.investopedia.com/articles/investing/082515/argentina-socialist-country.asp

Argentina’s economy has NOT suffered because of socialist programs or measures, but for other (non-socialist) considerations, e.g., political corruption, “austerity” measures, and irresponsible monetary policy.