Extreme Prejudice
A single-minded action -- usually in reference to an aggressive act of killing something or someone.
"You need to wipe out the enemy with extreme prejudice."
terminate with extreme prejudice
(verb) Kill. Allegedly a bit of CIA humor.
Agent: "If we're pulling out, what will we do with the spies and informers we've been using? They know too much."
Boss: "Terminate with extreme prejudice."
Boss: "Terminate with extreme prejudice."