What war were women protesting in Aristophanes’ comedy, Lysistrata (c. 415 B.C.)?

They were protesting the Peloponnesian War between Athens and Sparta, waged from 431 to 404 B.C. in Aristophanes’ comedy, Lysistrata.

In the play, the women of Athens and Sparta refuse to have sex with their husbands until peace is made.