SDB posts some notes about space battles and says it's not likely that he'll be able to finish writing more on the subject. (I hope he's ok.) It all makes interesting reading; here's my take on his last entry.
The only disagreement I have with him is over the use of nuclear weapons. He says they won't be used in space for the same reasons they aren't used on earth: politics. Possibly, but considering the reduced long-term pollution effects of nuclear weapons in space and the incredible utility of such weapons in a space battle, I'm not convinced such a position would hold indefinitely. I don't think a nuclear attack in space would be seen as the equivalent of a nuclear attack on the ground (of any planet).
Buckethead has more excellent thoughts and agrees with me about nukes.