By Ovidio Castro Medina Bogotá, Jan 31 (EFE).- Venezuela has become a powerful link in a chain of autocracies led by Russia, China, and Iran challenging the world’s democracies, Spanish writer Javier Moro, winner of the 2011 Planeta Prize for “El imperio eres tú,” told EFE. Moro, who turns 69 on Feb. 11, is visiting …