You have been very helpful yet again, thank you
I too would not do this question in an exam, but I don't want to get into the habit of thinking 'I won't bother with that question because I wouldn't do it in the exam' because probably around half the past questions seem too difficult for me to do!!
You seem to have such a wider knowledge of the time period than me though
(Below, I'm not criticising what you wrote because it is very useful, I'm just basically typing out my thought processes - when I wrote it it felt a bit like I was being critical and I didn't want you to think that haha)
Looking at this question again in the light of what you have said, for your first paragraph could you talk about how fighting solved political conflict in Athens? For example, after Pericles' death the conflict with Sparta played a large role in dictating who became the leader of Athens - Cleon in the Archidamian War, and then Alcibiades after Sicily, and also you could maybe talk about Lysander in Sparta in that his success at Notium made him leader (although I haven't got much evidence of a power struggle in Sparta so it may be a bit of a push).
I'm not sure when you referenced the revolt of Samos whether you were talking about the one in 411 (I think there was one then - I'm a bit sketchy on that period) or during the Pentecontaetia, but could you perhaps mention how Athens merely crushed the revolts of their allies with sieges and the like and never with any proper diplomacy?
You could also/instead link in Alcibiades with your second paragraph as well as the first in that putting power into Alcibiades' hands meant that the fighting between the oligarchs and the democrats was stopped and civil war prevented.
I don't really know much about Brasidas (thanks for drawing attention to that - I will definitely do more revision on him) but are you referring to him stirring up revolts among the Athenian allies?
Could you also talk about Athenian control of their allies which in some ways prevented conflict in that it made the allies incapable of putting up a lot of resistance? It was in some ways unsuccessful in that it encouraged conflict due to them having to rebel rather than just leave the League peacefully as they would have done otherwise. The Spartans in contrast seem to be more peaceful in their debates and assemblies as a method of dealing with conflict and that although they do end up declaring war on Athens they still offer an ultimatum to them, suggesting that the Spartans were able to solve conflict in other ways and it was primarily the Athenians who resorted to fighting (although Thucydides tries to give the impression of the exact opposite, especially as he says that the Athenians were willing to submit to arbitration).
I would also definitely talk about the truces - the 30 year truce, the 50 year truce but especially the Peace of Nicias. Although they all ultimately failed, I think they are good evidence that the Greeks tried to solve conflicts peacefully. However, the do seem to be just periods of peace in order for both sides to rebuild their armed forces.