well as you are clueless about Greek history it seems its up to me to enlighten you on the matter.
In Peloponnesian war , twice Spartan navy get destroyed by Athens Navy and twice Persia rebuilt their navy and after that the third time Sparta army at last managed to destroy Athens navy , defeat them and even make them destroy their walls . that's your Athens navy that you wondered what happened to it .
if you like I go in detail about it in your profile not here
Persia only involved at first , when Sparta was still in Asia and attacking Iranian cities , do you realize the war lasted 8 year , after the Greeks were busy in Europe , Iran just made sure that the war last more
it was until Iran said they must make peace and by the way it was after Iran supported Athens and allies until they become to strong and Sparta come to Iran and ask for help.
so however you spin it in the war Persia supported both side just to make sure Asia minor remain peaceful. the result of that policy was 50 years of peace in our western border.
and you don't really knew what happened there
as if you understand what those dates mean , the war was from 395-387bc the only direct Persia intervention in that war was Achaemenid Naval campaigns of 393bc to cut Sparta route to Egypt.
and while Iran did that , we financed rebuilding Athens and allies navy we even financed rebuilding Athene long wall and then, they do the job themselves and interestingly in 392bc while we helping Athens in broad day light , we gave money to Sparta to rebuild its fleet , if that's not definition of prolonging the war and playing both side , then what is it. ?
after that date I dare you find any Iran direct intervention in that war. and I ask you till you admit you don't knew shit about history , even after a day reading and digging about this single war , you still didn't get it right . so please tell me about Iran direct intervention after that campaign.
.look at Kings Peace of 387 bc and it will tell you a lot
Persia was not party of the war , the Threat that if the Greek cities don't make a peace Persia wage war against the party who refused the term of this peace made the war stop . wonder how Persia can be part of the war and also made that threat?
and by the way resorting to name calling , and saying how bad is somebody grasp of a language that is not even his second language just show how little you are , how weak is your argument and how trivial is your knowledge of the matter.