But, if they do treat our service members in such barbaric, typically-Middle Eastern ways, we should make it clear that any troops found to have done so, and their officers right up the chain of command, will be tried by summary court martial and executed.
Precisely why I would threaten them. If they understand that gruesome death will come from such behaviour, and the Foreign Minister is killed as an example, then others will be deterred.
Regards, Ivan