After a few more years of fighting , in 387 BC the Peace of Antalcidas was established , according to which all Greek cities of Ionia would return to Persian control .
Persia 's Asian border would be free of the Spartan threat .
After a few more years of fighting , in 387 BC 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 .