See the first brief mention of these envoys in Chapter 1-5. Comparing these two descriptions, we find the seating arrangement: Ribiera, flanked by the two foreign envoys (representatives of colonial domination), flanked in turn by Gould and Avellanos (locals who financed the revolution). A fitting illustration of the power structure that elevated Ribiera.

We are not told which foreign nations are represented here, but the gentleman sitting next to Charles Gould bears an uncanny resemblance to Theodore Roosevelt. The other envoy is presumably British.