According to the book of Revelation, upon Christ's imminent return, the nations will attempt to make war against Him, at which point He will destroy them all, with a vengeance.
What DID Jesus do?
During Christ's first advent, He arrived as a sacrificial Lamb, in order to reconcile man with God, thus ending the enmity that separated us.
As a peace-loving Christian, I am ready and willing to fight for Peace.
He hasn't come back yet.
He lived on this earth as a man from a tribe of conquered people, living in oppression. Caesar was not a gentle, loving, duly elected leader! The religious leaders, and Zealots constantly tried to get Jesus to go against the Roman government...yet he never did. He never commented on the political situation, but instead kept his speech on changing men from the inside out. As you said, this was his mission.
Pat's mission is NOT to call for the killing of a human being, but instead, his mission is to call all men to Christ, in preparation to the return of Jesus, and the judgement!