Factbox: Guaido vs. Maduro - Who is backing Venezuela's two presidents

A slew of European nations this week joined the United States and other Western countries in recognizing opposition leader Juan Guaido as Venezuela's legitimate head of state, heightening a global showdown over Nicolas Maduro's rule.Guaido says the May 2018 vote in which Maduro won a second term was a sham and on Jan. 23 invoked a constitutional provision to declare himself president, promising free and fair elections.The 35-year-old has since won the support of many western nations although pow