::told police it was “normal” behaviour in the Middle East::
Their response should have been: And the normal way we deal with people who do this in OUR COUNTRY is put them to death. No jail, no trial, instant execution...
That's essentially how Charles stopped Sutee in India (Bride burning)
https://en.wikipedia.org/wiki/Charles_James_Napier
“Be it so. This burning of widows is your custom; prepare the funeral pile. But my nation has also a custom. When men burn women alive we hang them, and confiscate all their property. My carpenters shall therefore erect gibbets on which to hang all concerned when the widow is consumed. Let us all act according to national customs.”