During a press availability to promote Hope for the World: Unite All Things in Christ (2016), his new book length interview with French journalist Guillaume d'Alancon, Cardinal Raymond Burke opined that it was highly questionable if Christians and Muslims worship the same God and that Islam is a religion of peace.
Cardinal Burke is an American bishop whose pedigree carries a tremendous amount of credibility. Burke was the Archbishop of St. Louis who was called to be the prefect of the Apostolic Signatura (the Vatican's highest court) and is now the Patron of the Sovereign Military Order of Malta.
It is Cardinal Burke's view that Nostra Aetate (1965) Vatican II's declaration on the Catholic Church's relationship with other religions, was not a dogmatic document. Many Catholics have found that the document was vague and were troubled as it seemed at odds with the precept that Catholicism is the one true faith.
Cardinal Burke believes that contemporary reactions to Islam are colored by a religious relativism that "we worship one God" and "God is love". If this is true, Burke wondered how Islam instructs to slaughter infidels and establish their rule by violence, where as people of the book (Christians and Jews) have a much different weltanschauung.
Keeping true to his current role as Patron of the Sovereign Military Order of Malta, Burke noted that nothing has changed in the Islamic agenda from prior times in which our ancestors had to defend Christendom from Muslim attacks as Islam was threatening sacred truth.