EnergiVenezuela raises stakes in dispute with Guyana over oil richesPresident Maduro claims mandate to incorporate Essequibo region but imminent war may be a ‘bluff’.Venezuela’s President Nicolás Maduro has dramatically raised the stakes in his country’s border dispute with GuyanaFoto: Pedro Rances Mattey/AFP/NTBMichael Stott (FT)Joe Daniels (FT)