Battle of Mantinea
Due to the growing Theban pressure on Athens (such as the seizure of Oropus in 366 BC), the Athenians became hostile once more, especially when actual help from their allies failed to materialise. None of the Greek states were able to gain full dominance in the following years. The conflict arising from the split in the Arkadian League also remained unresolved. This culminated in 362 BC with the Battle of Mantinea, in which the Spartans, Athenians and their allies faced down the Thebans and their allies. After the battle, in which the foremost Theban commander Epaminondas was killed, both sides considered themselves the victors and again concluded a common peace.