Michael J. Gorman talks about these issues in his book, Reading Revelation Responsibly, which I've been recommending for the last couple days.
Politically, the books don't line up with biblical teaching. They are militaristic and unabashedly pro-America. They see war in the Middle East as a good thing, something dictated by God, and they place the readers into a crusader mentality, warring for Jesus.
Check out Gorman's book for more on all of these topics plus.
For additional reading on Revelation, I (again) recommend N.T. Wright's Revelation for Everyone and our companion blogging project at revelation.westwinds.org.