Mexican Foreign Relations Secretary Marcelo Ebrard. Photo: presidencia.gob.mx By ALEJANDRO ENVILA FISHER It's a well-known fact of life: What starts out badly inevitably ends up worse. In the case of Mexico's now-globally spotlighted Foreign Relations Secretariat (SRE), it all began on Saturday, Aug. 7, with the abrupt and unjustified dismissal of renowned author and historian