Ares' domain, Olympus

Even in the lofty heights of Mount Olympus, nothing was deeper than Ares' anger and spite towards his godly colleagues. Always scheming and manipulating against him, how else should he feel towards his oppressors? If only he had more power, he could show those arrogant fools the extent of his rage and vengeance! But how? As it stands, all the Greek city-states are already at war, and all avenues of worship are at their maximum. Nothing save creating new nations to go into war would increase his power; but if he were to even attempt that, the other gods would, of course, rally together to thwart him. There is also the option of expanding his influence to other nations, but the problem of encountering and fighting other gods still exists, which could be troublesome. The ideal situation to increase his power would be to infiltrate a land where the gods are weak, and the people are strong. But where would such a place exist?