There may be no other way.
French president ordered borders CLOSED
You may be right.
My sense is that the destruction of the structures of Mohammedanism,
coupled with an undoubtedly large number of killings
and a significant sustained effort may be effective in dissolving the cancer.
Worth a try anyway.
There are a number of historical religions that are no longer extant.
The first thing imho, that needs to be done, is to secure our homebase(s).