At one place the author writes:
"But dispensationalism moves beyond what the church has always believed. In developing the idea that the rapture will occur before the tribulation, and by suggesting a period of history from which Christians will be removed, dispensationalism represents a real departure from the churchs historic faith. This does not mean that it is wrong, merely innovative; but the novelty of dispensationalism is even more marked in the publications of those popular prophecy experts who write their own political fears into their exegesis of biblical truth. A long line of prophecy experts has found in Scripture all manner of references to the bogeymen of the present. Every anti-hero of the day has been written into the scenario of the end, from Cold War Communism to the increasingly powerful United Nations. What these villains have in common is the danger to the American way of life they are believed to represent. In that sense, dispensationalism is a theology strongly inflected by fear. From the late nineteenth century to the present day, dispensationalism has articulated an ultimately American doomsday."
Right now (second chapter) he is unpacking the types of the anti-Christ found in the OT
Riddlebarger is an amillenialist. I think I lean in that direction.