https://theconversation.com/maduro-objetivo-silenciar-a-la-disidencia-228066
http://www.pewresearch.org/fact-tank/2017/06/26/around-the-world-favorability-of-u-s-and-confidence-in-its-president-decline/
http://www.bta.bg/en/c/DF/id/1731928
https://www.infolibre.es/opinion/plaza-publica/protestan-serbios-kosovo_129_1516636.html