When a group beheads one of your citizens, it is mandatory that tens of thousands of them die. Preferably horribly.

Mandatory.

ISIS is not a boys Prep school; they have females and children. Find where they are located, and hit that area. Capture operations if possible without too great a risk, otherwise, scorched earth.

Odd we have a Chicago occupant of the WH, who won't fight this war the Chicago way...
https://www.youtube.com/watch?v=xPZ6eaL3...



-------------
"But — Dr. Whitlock, he's been careful, there's no
evidence to connect him or his political movement
with any of this. No criminal acts."

"Well, that's right, and if that's what you're waiting
for, you'll never get it," Whitlock said. "Son, a long
time ago a man named Burke said that for evil to win
all that's got to happen is that good men do nothin'.
That's happening here. You're in a war, and you got to
fight it like a war."

"And if we get like the enemy what's the point of
winning?"

"That's what King David's always sayin'," Whitlock
said. "Your father, too, sometimes, not so much now.
Lysander, let me tell you something, you couldn't in a
million years be like them even if you was to work at
it." Whitlock studied papers on his desk for a moment-
"You better think about it. I'll go on plannin' the
politics for you, and Pete Owensford will go on fightin'
the enemy for you, good men will go on dyin' for you,
and hell, it may be enough. Prince Lysander, it just may
be enough, and maybe you got a point. You've got a
decent government, and Lord knows I'd hate to see it
turn mean, but you better think. Your Highness. Just
how many of your people are you willing to see killed
just so Citizen Dion Croser can have his legal rights?"
-------
from "Prince of Sparta", Pournelle & Stirling

I just love that last line from that scene.