Indeed, here's a quote from one of the Jihadies on our own soil:
Sheik Omar Abdul Rahman:(The Blind Sheik, currently residing int the Federal Administrative Maximum Penitentiary hospital in Florence, Colorado.)
"The obligation of Allah is upon us to wage Jihad for the sake of Allah. It is one of the obligations which we must undoubtedly fulfill. And we conquer the land of the infidels, and we spread Islam, by calling the infidels to Allah. And if they stand in our way, then we wage Jihad for the sake of Allah."
BINGO!