Bleg: Tolkien Scholars

It's been probably more than two decades since I read The Lord of the Rings Trilogy, but I seem to remember something about "evil from The East" as the bad guys were known. Now, as I understand it, Mr. Tolkien was referring to Soviet Communism (or at least it has been interpreted in manner by some). What I'm trying to get a handle on is whether or not this same metaphor can be extended to Islamic Fascism. Any theories? Any thoughts?

dpny