[140] Thucyd. v, 80. Καὶ ὕστερον Ἐπιδαυρίοις ~ἀνανεωσάμενοι~ τὰς σπονδὰς, αὐτοὶ οἱ Ἀθηναῖοι ἀπέδοσαν τὸ τείχισμα. We are here told that the Athenians RENEWED their truce with the Epidaurians: but I know no truce previously between them except the general truce for a year, which the Epidaurians swore to, in conjunction with Sparta (iv, 119), in the beginning of B.C. 423. The mode of proceeding here resorted to by Athens, in respect to the surrender of the fort, seems to have been dictated by a desire to manifest her displeasure against the Argeians. This was exactly what the Argeian leaders and oligarchical party, on their side, most desired; the breach with Athens had become irreparable, and their plans were now matured for violently subverting their own democracy. They concerted with Sparta a joint military expedition, of one thousand hoplites from each city,—the first joint expedition under the new alliance,—against Sikyôn, for the purpose of introducing more thorough-paced oligarchy into the already oligarchical Sikyônian government. It is possible that there may have been some democratical opposition gradually acquiring strength at Sikyôn: but that city seems to have been, as far as we know, always oligarchical in policy, and passively faithful to Sparta. Probably, therefore, the joint enterprise against Sikyôn was nothing more than a pretext to cover the introduction of one thousand Lacedæmonian hoplites into Argos, whither the joint detachment immediately returned, after the business at Sikyôn had been accomplished. Thus reinforced, the oligarchical leaders and the chosen Thousand at Argos put down by force the democratical constitution in that city, slew the democratical leaders, and established themselves in complete possession of the government.[141] [141] Thucyd. v, 81. Καὶ Λακεδαιμόνιοι καὶ Ἀργεῖοι, χίλιοι ἑκάτεροι, ξυστρατεύσαντες τά τ’ ἐν Σικυῶνι ἐς ὀλίγους μᾶλλον κατέστησαν αὐτοὶ οἱ Λακεδαιμόνιοι ἐλθόντες, καὶ μετ’ ἐκεῖνα ξυναμφότεροι ἤδη καὶ τὸν ἐν Ἄργει δῆμον κατέλυσαν, καὶ ὀλιγαρχία ἐπιτηδεία τοῖς Λακεδαιμονίοις κατέστη: compare Diodor. xii, 80. This revolution, accomplished about February, B.C. 417, the result of the victory of Mantineia and the consummation of a train of policy laid by Sparta, raised her ascendency in Peloponnesus to a higher and more undisputed point than it had ever before attained. The towns in Achaia were as yet not sufficiently oligarchical for her purpose, perhaps since the march of Alkibiadês thither, two years before; accordingly, she now remodelled their governments in conformity with her own views. The new rulers of Argos were subservient to her, not merely from oligarchical sympathy, but from need of her aid to keep down internal rising against themselves: so that there was neither enemy, nor even neutral, to counter-work her or to favor Athens, throughout the whole peninsula.