So let me get this straight:
There's a powerful nation coming towards Earth to wipe us all out before we get advanced enough to protect ourselves because they both want what we have and don't want to give us the opportunity to build up, and they also have people here among us who despise the current people in charge and think the foreign invaders will be better for us all.
Additionally even as we live under threat of oncoming invasion, people still want to believe "surely they're not as bad as we think they are; look how advanced they are!"
The only thing that also turns them away finally? We create a mutually assured destruction weapon, and this is what finally stop the invasion and makes the invader behave themselves; meanwhile, people here on Earth are actually really getting into the cultural works of the people who want to invade us; we listen to their music, read their philosophers, watch their movies, etc., and we believe that coexistence with the vastly more powerful foreign nation is entirely possible and things must absolutely be different now, surely.
Of course the most powerful, 'needs to be ready to push the button' person on the planet is now becoming more trusting of this former foe nation and thinks perhaps there really is middle ground between them and doesn't truly want to even be in the position where they'd have to fight back against them, and in that moment of indecisiveness, in that moment of weakness, the foe nation already had the means of our destruction at our doorstep, waiting for a weak 'leader', and starts the war to annihilate us.
Watching this it definitely felt like a dig at American soft power and how the only thing that stops us from invading places like the DPRK are deterrents or MAD weapons, and also how we like to build up treasonous groups who oppose their own countries thinking we're going to be in it for their sakes.