Greece thus entered the 4th century BC under a Spartan hegemony, but it was clear from the start that this was weak. A drastically dwindling population meant Sparta was overstretched, and by 395 Athens, Argos, Thebes, and Corinth felt able to challenge Spartan dominance, resulting in the Corinthian War (395–387 BC). Another war of stalemates, it ended with the status quo restored, after the threat of Persian intervention on behalf of the Spartans.