He attributed his shift in perspective to the influence of anti-Marxist writer Karl Popper, whose work helped frame the free-market policies of British Prime Minister Margaret Thatcher, and philosopher Isaiah Berlin.
https://www.batimes.com.ar/news/culture/mario-vargas-llosa-peruvian-nobel-winning-novelist-dies-at-89.phtml
https://www.batimes.com.ar/news/culture/mario-vargas-llosa-peruvian-nobel-winning-novelist-dies-at-89.phtml