Bernie Sanders goes completely speechless when questioned about socialism's failures around the world

The Democrats’ socialist candidate for President of the United States, Bernie Sanders, was seriously tripped up this week in an interview with Univision’s León Krauze.

When asked to explain the failure of socialist governments in Venezuela, Argentina and Brazil, Sanders completely clammed up, saying he has an opinion on the subject, but was unwilling to share it, as he is “focused on my campaign.”

LEÓN KRAUZE, UNIVISION: I am sure that you know about this topic: various leftist governments, especially the populists, are in serious trouble in Latin America. The socialist model in Venezuela has the country near collapse. Argentina, also Brazil, how do you explain that failure?

BERNIE SANDERS, DEMOCRATIC CANDIDATE: You are asking me questions…

LEÓN KRAUZE, UNIVISION: I am sure you’re interested in that.

BERNIE SANDERS, DEMOCRATIC CANDIDATE: I am very interested, but right now I’m running for President of the United States.

LEÓN KRAUZE, UNIVISION: So you don’t have an opinion about the crisis in Venezuela?

BERNIE SANDERS, DEMOCRATIC CANDIDATE: Of course I have an opinion, but as I said, I’m focused on my campaign.