Yep. It’s Ace’s fault.

↓ Transcript
Gina
Of course generating a micro-singularity destroyed the Old Ones’ Particle Accelerator. Ordinarily, a singularity that small would quickly, let's say “evaporate” for want of a better word. But it lasted long enough to consume the planet.

Ace
MOM! You really destroyed a planet full of people? What about all the children and civilians?

Gina
They didn’t have civilians. Every single Saurian, from the lowest ranked drudge to their ruling committee, was committed to conquest and destruction. And Earth was next.

Walton
And no children, or women, either. They cloned their cells in huge batches of slurry, then used something like fabbers to assemble grown Saurians, and some kind of interface to generate a basic personality. It was all dependant on an ancient supercomputer. They came out of the tanks fully formed and ready to serve.

Fortunately they had so few tanks, and it was all ancient technology. They had no way to make more. And only the one main controller. So it was all on their homeworld.

Gina
And since they kept trackers on their slaves and prisoners, our Orion friends were able to beam every one of them to safety.

We really had no choice. And it was our only chance. They were literally massing forces to attack our planet. They would have exterminated humanity, or made us food animals. Their favorite being children and young women, like little Ju Yi.

Ace
Ju Yi?! The guy trying to carry her off was a Lizardman?

Gina
Yep. And you killed him with your bare hands. No one else has ever done that. But you did start an interstellar war.