Abstract
The narrative of Thucydides on the period from the Peace of Nicias to the Athenian expedition to Sicily has been less intensively studied than any other part of the History. It is true that the Melian Dialogue, which contrasts so sharply with the rest of the fifth book, has accumulated a large bibliography. The problems arising from the campaign culminating in the battle of Mantinea have also received a considerable amount of attention. On the other hand, the accounts of negotiations and intrigues, mostly in the Peloponnese, which occupy much of the fifth book, have tended to be ignored, being thought to be obscure, confusing, and tedious. Scholars interested in the history of the period have experienced difficulty in tracing a coherent pattern in its catalogue of diplomatic manœuvres and in establishing the motives which prompted them. Scholars interested in the historical technique of Thucydides have been disappointed, even repelled, because his facility for mastering his material seems to have to a large extent deserted him.