A series on the Peloponnesian War from the Great Courses. Heard but not seen. I had been listening to some series on Greek history that seemed to culminate with this "civil" war. There are fascinating lessons about how democracies can fail. The lecturer (Ken Harl) is amazing and gets excited to the point he's almost shouting (not in a bad way) by the end of lectures. Some highlights include the Athenian democracy voting itself out of existence, multiple betrayals, and a cameo from Socrates.
I got a copy from my local library at the time ~ 2014.
https://www.thegreatcourses.com/courses/peloponnesian-war