Romulan ambassadör Nanclus

Han var minst en konspirator

In that year, he was involved in a conspiracy to sabotage peace talks between the Federation and the Klingon Empire. While in a meeting with the Federation President after the arrest of James Kirk and Leonard McCoy, Nanclus lent his support to "Operation Retrieve," the proposal to infiltrate Klingon space and rescue the hostages, put forth by Nanclus' fellow conspirator, Colonel West. Later, Nanclus attended the Khitomer Conference. After the crew of the USS Enterprise-A learned of his involvement in the conspiracy, and successfully prevented the assassination of the Federation President at the conference, he was detained by Starfleet. (Star Trek VI: The Undiscovered Country)

Nanclus-Memory Alpha

Överallt som du ser på Memory Alpha säger de alla att han var samkvämare för att undergräva fredsförhandlingar, så oavsett huruvida han var involverad i resten av det som pågick, är jag säker på att han var minst försöker undergräva fredsförhandlingarna och det gav honom lite ammunition

David A. McIntee föreslog en gång att han kanske hade varit initiativtagaren till konspirationen i en Star Trek Magazine-artikel

Author David A. McIntee once proposed that Nanclus was actually the initiator of the conspiracy, having secretly put the idea that the Federation were the true threat to the Klingon Empire into General Chang's mind, due to Romulan concerns that the Klingons and Federation were about to form a pact. McIntee went on to characterize Nanclus as "almost certainly the true villain of the movie, and probably the most forgotten of the Trek villains." (Star Trek Magazine issue 149, p. 64)

Nanclus, Memory Alpha

Tyvärr behövde romulanerna inte Klingonerna och Federationen samarbeta, för Romulanerna kunde inte överväga dem i tandem, vilket innebär att Romulanerna aldrig kunde expandera till Federation eller Klingon-rymden.