Reports say that speculation about a coup in Congo has been rife since August after the military took over in Gabon following the victory of the ousted President Ali Bongo in Gabon.
Victoria Nuland was allowed to meet only the new military chief of staff Brigadier General Moussa Salaou Barmou, not the new leader General Abdourahamane Tchiani or the deposed President Bazoum.
The Congress, where Xi is anticipated to be re-elected for a record-breaking third term, is taking place in the midst of a large purge of top security officers who are said to be part of an ideological circle antagonistic to the Chinese President.