His successor was Dionysius the Younger, who was however expelled by Dion in 356 BC. But the latter's despotic rule led in turn to his expulsion, and Dionysius reclaimed his throne in 347 BC. Dionysius was besieged in Syracuse by the Syracusan general Hicetas in 344 BC. The following year the Corinthian Timoleon installed a democratic regime in the city after he exiled Dionysius and defeated Hicetas. The long series of internal struggles had weakened Syracuse's power on the island, and Timoleon tried to remedy this, defeating the Carthaginians in the Battle of the Crimissus (339 BC).