I have stated this before.
To truly win a war, you kill them, and their wives, and their children, and their livestock, and their crops.
You bomb them until you are bombing rubble, then you bomb them some more
You keep killing them until they beg for mercy, and then you kill them some more until YOU decide they got the message.
Then you make them pay for the drubbing you gave them.
Make it so their great-grandchildren fear the sound of military aircraft, or the sight of one of your soldiers’ shadow.
No quarter asked or given. The Romans, while they could be idiots in some ways, got that part of warfare correct.
Like Sherman.