Cersebleptes was the most ambitious of the three. He continued his father's war against Athens for the Chersonese, while also striving to reunite the Odrysian kingdom. His attempts proved futile, for Amadocus II and Berisades, who received support from Athens, resisted his attacks. In 357 he was forced to accept a peace treaty that sealed the division of the Odrysian state. An inscription from Athens describes said treaty. First, Cersebleptes had to cease his hostilities in the Cheresonese. Second, all three kings and Athens agreed to share their tributes received from the Greek colonies along the Aegean and the Hellespont. Third, the kings promised to enter an alliance with Athens and both sides had to provide eachother with military support if tributary Greek colonies revolted. Cersebleptes, however, soon quit that treaty and continued his war in the Chersonese.