Cimon's Dismissal, Ephialtes' Revolution and the Peloponnesian Wars Cole, John R Greek, Roman and Byzantine Studies; Winter 1974; 15, 4; ProQuest pg. 369 Cimon's Dismissal, Ephialtes' Revolution and the Peloponnesian Wars John R. Cole THE YEAR 462 B.C. may have marked the most acute crisis in what Bengtson calls "the decisive turning point in the internal and external histories" of Sparta and Athens.1 We lack the authori­ tative historical source to state from antiquity the case for 462 that Herodotus states for 480 or Thucydides for 431. But ancient histori­ cal tradition does suggest the unique concatenation of three calamities in 462. First in the tradition, at Sparta the earthquake of 464 and the subsequent helot rebellion shook the state to its very foundations, so that proud Sparta had to come as suppliant to Athens. Second, at Athens the