Ionian Revolt
Gore Vidal describes the Ionian Revolt in his historical novel "Creation", presenting events from the Persian point of view. Vidal suggests that the Ionian Revolt might have had far-reaching results not perceived by the Greeks, i.e., that King Darius had contemplated an extensive campaign of conquest in India, coveting the wealth of its kingdoms, and that this Indian campaign was aborted due to the Persians needing their military resources on the western side of their empire.