So if Mossad used UK passports whats the correct response?

Ah, I see, the classic “no matter what the facts are, I’m gonna keep on truckin” gambit.

Why don’t you put your money where your mouth is and show why, for instance, in all the history of modern espionage using false passports hasn’t had any real negatives for the countries that were impersonates, but all of a sudden now it might.
Or, show why sanctions /war which hurt many, many innocents are better than assassinations that harm zero innocents.

Got anything? Or just more “U R WRONG!!!”