Battle of Leuctra
After a few more years of fighting, in 387 BCE the Peace of Antalcidas was established, according to which all Greek cities of Ionia would return to Persian control, and Persia's Asian border would be free of the Spartan threat. The effects of the war were to reaffirm Persia's ability to interfere successfully in Greek politics and to affirm Sparta's weakened hegemonic position in the Greek political system. Sparta entered its long-term decline after a severe military defeat to Epaminondas of Thebes at the Battle of Leuctra. This was the first time that a full strength Spartan army lost a land battle.