How was this Troika organization decided? It's not quite clear. The Troika is written into the "estatuto de procedimientos" of the organization. Though countries agreed to this document, many appeared to be taken off guard by the announcement.
Doesn't CELAC's consensus model mean that all countries agreed to this model? Apparently not. Trinidad and Tobago strenuously objected on Saturday, saying that the English-speaking Caribbean must be represented in the leadership group and asking for it to be expanded to a quartet. Panama asked that CELAC establish a general secretariat. If Trinidad and Tobago and Panama objected and all decisions are consensus based, how did this Troika organization make its way into the document?
Also, it seems hard to believe that Brazil and Mexico would have handed over influence to an organization in which they have no say for the next four years. After Mr. Chavez announced the Troika, the presidents of Mexico, Brazil, and Argentina left the summit and Brazil's foreign minister became uncharacteristically less enthusiastic about CELAC as a whole. The summit seemed to lose speed the second day and this Troika announcement appears to be part of the reason.