It would be better than that. Heck, there's an idea for a novel (excise Miri and co. and make it another planet of Human kids, another way of controlling them)
Klingons find a planet where human children survived some plague or holocaust. Klingons use agents that look like humans to restore the civilization and raise the children, training them to be sleeper agents in the same manner that the Soviets did with children raised in those "cities" that looked like US cities
https://panethos.wordpress.com/2013...hot-dogs-and-vodka-spy-towns-of-the-cold-war/
https://m.ranker.com/list/kgb-built...yLI9Kw.5&utm_referrer=https://www.google.com/
Of course, these cities were unknown in the 60s