The Chronoliths, by Robert Charles Wilson

Time paradoxes galore made this an interesting read. I'm not sure I should say it is great, but I enjoyed it. After trying to read "The Light Fantastic" and getting nowhere for two weeks, I picked this one up and finished in three days without ever feeling I was making an effort to read it. The premises are that 20 years into the future, someone called Kuin conquers Thailand and sends back in time a monument to commemorate this feat. The old question of whether the future can be changed is explored here in an original and very thoughtful way. I found this to be a book to be read at least twice and I imagine that a second reading will make it even better.