History and Policy
Friends may be aware of the History and Policy unit whose purpose is to use the 'lessons' of history to think about policy-making today. Most of its papers are written modern historians, but here are two by ancient historians:

Ostracism: selection and de-selection in ancient Greece, by Paul Cartledge:
http://www.historyandpolicy.org/papers/policy-paper-43.html

Empire and development: the fall of the Roman west, by Peter Heather
http://www.historyandpolicy.org/papers/policy-paper-44.html