An excellent guide to the complex entanglements of cities and kings in the Greek world from the Classical period on.
Ian Worthington, FSA, FRHistS is Professor of Ancient History of Macquarie University. He is the author of numerous books about ancient the ancient world, including, most recently, The Last Kings of Macedonia and the Triumph of Rome, Ptolemy I: King and Pharaoh of Egypt, By the Spear: Philip II, Alexander the Great, and the Rise and Fall of the Macedonian Empire, and Demosthenes of Athens and the Fall of Classical
Greece.