But a few all out air attacks on Mecca/Medina/Islamabad/Tehran/Palestine might lessen the body count.
But it would also stir up a heck of horents nest amoung the "overseas" Jihadies, and those outside of the target areas in those countries.
Still 12 million is a big number and it will take lots of bombs and bullets to "convince" them that Jihad is not the way.