A lot of speculation and guessing here
Ordinance Fifty-Three is the last resort solution and shouldn't be used lightly. Even if you don't trust Toral to feel any sympathy for Federation species, there are Cardassians on that planet too and, as a soldier, Toral knows his first duty is to protect, not slaughter his own people.
As to the other things...you'll see
In a Cardassian library
or in a Cardassian gallery
"Reagan, it appears, is really only an ardent unionist if the unions in question are in Poland" - Stephen King, Skeleton Crew