Perhaps he’s both. I was just scanning through the latest entries at Audible.com and stumbled across this little gem, Empires of Trust by Thomas F Madden. Check the synopsis. I expected to see "Published by The Onion.com" after it.

By making friends of enemies and demonstrating a commitment to fairness, the two republics - both "reluctant" yet unquestioned super-powers - built empires based on trust. Madden also includes vital lessons from the Roman Republic’s 100-year struggle with "terrorism."