ABSTRACT
Athens had been officially at war with Philip since his seizure of Amphipolis in 357, but other priorities, particularly the Social War, made more pressing demands on Athenian attention. In 352, however, Philip’s aggressive activities put the Athenians on alert. On the Greek mainland, Philip advanced as far as Thermopylae before turning back; and in the Chersonese, an area vital to Athenian interests, he besieged Heraion Teichos (Part Two, Philip and Athens, p. 72). In 351, Demosthenes responded by delivering before the Athenian Assembly a call to arms now known as his First Philippic.
