The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from Hellenica by Xenophon:|
to raze their fortification walls the ban was called out against them.
Agesilaus begged the state to absolve him from the conduct of this war
on the plea that the city of Mantinea had done frequent service to his
father in his Messenian wars. Accordingly Agesipolis led the
expedition--in spite of the cordial relations of his father
Pausanias with the leaders of the popular party in Mantinea.
 As to this point, see Curtius, "H. G." V. v. (iv. 305 note, Eng.
trans.) There appears to be some confusion. According to Thuc. v.
81, "When the Argives deserted the alliance [with Mantinea,
Athens, and Elis, making a new treaty of alliance with Lacedaemon
for fifty years] the Mantineans held out for a time, but without