Polonia

The decision to eradicate the potential threat of disease had back fired to an apocalyptic extent with an entire planet paying the ultimate price.
He did not care. His objective had been reached and his species would remain dominant.
The simple push of a button, the firing of the Hades 13 Genocide Weapon had wiped out the Polonians in one fell swoop along with millions of other life forms.
"It's done!"
"Good," came the reply, "Time to rebuild."
"It's not safe yet."
"Orbit once more then begin the landing process."
He cancelled the communication. He had other plans.