Federation - Klingon War ( 2267 ) The Federation - Klingon War of 2267 was a brief conflict fought between the United Federation of Planets and the Klingon Empire in 2267 . It was the result of years of tense build - up in a cold war situation , following the Federation - Klingon War of 2256 - 2257 , but was ultimately inconclusive because the fighting was abruptly ended by the Organian s . ( ) Shortly before stardate 3198 . 4 , ongoing negotiations between the two sides were in danger of breaking down , and open warfare was becoming an unwelcome likelihood . Starfleet Command expected that the Klingon s would launch a surprise attack after they issued an ultimatum demanding that the Federation withdraw from all disputed regions along their mutual border , including Donatu V , Sherman ' s Planet , Organia , the Archanis sector , and other territories . When the Federation refused the demands , the Klingons launched an immediate attack – even before an official declaration of war was issued . ( ) When the Federation starship received notice of the declaration of war , it was ordered to the planet Organia , which occupied a strategic location in disputed space ( now the front lines of the war ) . Captain Kirk ' s orders were to prevent the Klingons from occupying the planet and using it as a forward base . At the time , the Organians were believed to be a simple , pre - warp agrarian society . Kirk and his first officer Spock beamed down and offered the Organian Council of Elders assistance in defending against the impending Klingon attack ; perplexingly , the Organians refused . Mere minutes later , the Klingons invaded , forcing the " Enterprise " away from the planet and leaving Kirk and Spock stranded on the surface . Klingon commander Kor proclaimed the planet a new territory of the Klingon Empire , with himself as military governor . Kirk and Spock disguised themselves as Organians to blend in and avoid capture ; ironically , Kor selected Kirk ( alias Baroner ) as his liaison to the Organian population , unaware that he was dealing with the enemy . Kirk and Spock attempted to wage a heroic two - man guerrilla war against the Klingons in an attempt to both disrupt enemy operations and to inspire the Organians to rebel against their Klingon occupiers . However , to prevent violence , council leader Ayelborne turned Kirk and Spock over to Kor , revealing their true identities . Kirk and Spock were imprisoned , but a short time later Ayelborne helped them escape , claiming that he had to protect their safety . Ayelborne was vague on how he penetrated the Klingon stronghold and evaded the guards there . When Kirk and Spock attempted to invade Kor ' s headquarters to hold the commander hostage , Kor welcomed Kirk , and Spock letting them know that the Federation fleet was on its way and that the Klingon fleet was going to meet them . Kor said the battle would decide the outcome of the Galaxy for the next 10 , 000 years , and assured both men that the Klingons would win the battle , but Spock countered that Kor couldn ' t predict the outcome of the battle and that there were many possibilities . Just then Klingon Soldiers appeared to rescue Kor , while at the same time the " Enterprise " returned with the Federation fleet , and were about to engage the Klingons in battle when the Organians , not wanting anymore violence , revealed themselves to be extremely advanced noncorporeal being s . They altered the perceptions of all Federation and Klingon ships , and soldiers , making it seem as if weapons and instruments of war were suddenly too hot to touch . In this way , they brought about an abrupt end to the war . Ayelborne appeared to both the Federation Council and the Klingon High Council and announced the unilateral imposition of the Treaty of Organia , which established ground rules for further interaction between the two powers , and for the resolution of the territorial disputes . Ayelborne also predicted that the Klingons and the Federation would one day become fast friends – a prospect scoffed at by Kirk and Kor , but one that ultimately proved true . ( ; )