There is no point in trying to refute Cornwell's acolytes, because they are unimpressed by any truth that would deprive them of this concoction they use to club the Catholic Church.
But posting refutations next to their smears is a good and necessary thing. Only by constant objection and refutation was the Protocols of the Elders of Zion rejected as fraud, and so too might it be with Cornwell's slanderous missive.
Alas br'r Petronski, the "Protocols" are still alive and well. The same folks who bandy them about and try to convince others of the existence of an international Jewish conspiracy also target Christians who support Israel and the legitimacy of Judaism as a route to salvation.