Michael P. Ferguson (M.S.) is a U.S. Army Officer and Ph.D. student at the University of North Carolina at Chapel Hill. His decades of military experience include combat tours to Iraq and Afghanistan and postings throughout Europe and Africa. He has authored dozens of journal articles and is an opinion contributor at The Hill.

Ian Worthington (FSA, FRHistS) is Professor of Ancient History at Macquarie University, Australia. He has written numerous books, including The Last Kings of Macedonia and the Triumph of Rome; Athens after Empire: A History from Alexander the Great to the Emperor Hadrian; and By the Spear: Philip II, Alexander the Great, and the Rise and Fall of the Macedonian Empire.