The Macedonian King Perdiccas III is killed while defending his country against an Illyrian attack led by King Bardylis. He is succeeded by his infant son, Amyntas IV. The child's uncle, Philip II, assumes the regency.[1]
The Illyrians prepare to close in, the Paeonians raid from the north and two claimants to the Macedonian throne are supported by foreign powers. Philip II buys off his dangerous neighbours and, with a treaty, cedes Amphipolis to Athens.
David Sedley, "An Iconography of Xenocrates' Platonism", Michael Erler, Jan Erik Heßler, Federico M. Petrucci, Authority and Authoritative Texts in the Platonist Tradition, Cambridge University Press, 2021, 9781108844000, 50