Yes it is. This is interesting:
http://www.theatlantic.com/doc/print/200409/cullison
INSIDE AL-QAEDAS HARD DRIVE
"In killing Americans who are ordinarily off limits, Muslims should not exceed four million non-combatants, or render more than ten million of them homeless. We should avoid this, to make sure the penalty [that we are inflicting] is no more than reciprocal. God knows what is best."
I didn't know jihadis could count that high.