Kill them on the spot.
O.K., send the U.N. packing to Paris or Brussels, pull all of our troops out of everywhere, build the WALLS at both of our borders and station them there and on our coasts, perfect the missile defense shield and deploy it in depth, stop ALL immigration and trade and let the rest of the world go to hell!
Let 'em slaughter each other to their hearts' content! If we have to fight with gloves on over there, stop fighting over there.
Or otherwise, fight to win so overwhelmingly that none dare oppose us. No more Mr. Nice Guy! < /rambling rant >