well, let's don't let this thread die now.
for some oldies but goodies, think of the following two, especially given the current unpleaantness in the Middle East, involving the Israeli & Iranian disagreements. and go ahead and throw in Syria too, if you want, no problem.
the Naked Ape by Desmond Morris
the Territorial Imperative by Robert Ardrey
anything you might locate written by Hermes Trismegistus, agreement or disagreement are both legitimate outcomes.
