Our government needs to declare it the policy of this country that if a WMD is used by muslims on our soil, then we will irradiate Mecca & Medina, such that they will be uninhabitable for 10,000 years. Additionally, as Ann Coulter says, we will invade their countries, kill their leaders (including imams), & convert them to Christianity.
That ought to get the attention of these totally immoral people. Only the threat of a global effort to erase this death cult of a "religion" will cause the muslims to back off from their aims of conquest.
One other thing. if we don't start dissuading these people of the idea that their murderous behavior is gonna get them a special place in heaven, they wont care whether they go up in a mushroom cloud, or not. I suspect they already don't care, "moderate" or jihadi.
How are we going to invade countries we've just irradiated for 10,000 years? Who's going to pump oil out of the Saudi desert after we turn it into a glowing ember?