Blitzer is obviously baiting Duke and trying to steer him into looking foolish, but people need to read Duke's books to get the whole story. It is shocking how accurate Duke truly is. Shocking! Furthermore, people who agree with Duke's opinion are global, and not limited to race or ethnicity -- even anti-Zionists Jews use Duke's work.
By the way, look into Wolf Blitzer (he changed his name), and he was indeed a lobbyist for AIPAC (no. 1 Israel lobby). I don't doubt for a minute that he collaborates with Israeli intelligence.