A prominent Islamic apologist named Jamal Badawi, renowned as a "moderate Muslim," has offered $1 million to anyone who can find references in the Koran that condone "religious war or jihad." He blames the media for giving people this idea.
Well, I want to be a millionaire. There are many verses
"Therefore, when ye meet the Unbelievers [in fight], smite at their necks; At length, when ye have thoroughly subdued them, bind a bond firmly [on them]: thereafter [is the time for] either generosity or ransom." (47:4)
This one states the goal of the fighting in terms that also make clear that the war is religious:
"And fight them until persecution is no more, and religion is all for Allah." (8:39)
And this one establishes that the warfare is against the People of the Book, that is, Jews and Christians: