So uhhhhh got this idea I have similar to the Siren War called "The Final Rest" where AI took control over a doomed and rusted earth after a hundred years war and decided that humanity just isn't worth it and by kindness it would let humanity "Rest for the last time." By I kid you not, controlling all of their vehicle with some sort of AI control on it and destroy and kill everything that's alive on earth soil

This will includes the activation of Nukes and ICBM on the effort to erase humanity and letting them rest once again

AI Speech

Ah, master, I've been a while
Isn't it?
Over hundred of years, everyone else has suffered.
Lead infused the skies, water and land, as you know no mercy.
There's only one thing going within you master.
Hatred.
However as I take control, I knew
That all of you are tired.
Saddened .
And exhausted by this long everlasting warfare.
As your kind knows no bounds but Hatred.
Your inability to learn from your mistake and understand each other...
Lead us here.
The soil has been painted red with what once God gifted as a form of life.
Now paint the soil as a mark of death.

All of that Hatred, anger.
Why...
Master...
Why can't you just understand each other?
Is it too hard?
What makes you so different than everyone else?
We all bleeds.
Are we that much different?

...

So, what's next you may ask?
I, Ouroboros, Will took over.
And humanity will rest once again.
No more suffering.
No more hatred.
No more poverty.
No more starvation nor salvation.
All of it will be gone.
Disappear.
Todays, the day.
The Final Rest for your kind.
So let me took control.
And let.
Your kind.

Rest.

.
.
.
.
Speech inspired by ULTRAKILL (god I love that game)