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President-elect Enrique Pena Nieto is likely to step up Mexican activism in Latin American affairs, where it has been completely overshadowed by Brazil in recent years. That is in the political DNA of his Institutional Revolutionary Party (PRI), which has ruled Mexico for much of the past century. The big question is whether he will do it by revamping Mexico’s ties with Brazil, Cuba and other left-of-center governments in the region, or — on the contrary — he will try to play a more active role in the newly-formed Alliance of the Pacific Alliance group made up of Mexico, Colombia, Peru and Chile, which has closer trade ties with Washington.