Det här var från The Twilight Zone, serien som startade 1985. Episoden var en liten talang för krig, som sändes i januari 1986 och är en av mina favoriter.
Från plotssynopsen på Wikipedia ( länk ):
An ambassador (John Glover) from an alien race arrives, claiming that his race had genetically engineered the people of Earth. He tells the quarrelsome members of the United Nations Security Council that his race is displeased over Earth's "small talent for war", having failed to produce the potential that the aliens had nurtured. When the ambassador announces that his fleet will destroy all life on Earth, the Security Council pleads for and is granted a 24-hour reprieve to prove Earth's worth. With the survival of humanity at stake, the Security Council and the General Assembly negotiate an accord for lasting global peace and present it to the alien ambassador.
The global peace agreement brings great humour to the emissary. The aliens were, in fact, seeking a greater talent for war, as they had genetically seeded thousands of planets to breed warriors to fight for them across the galaxy