The Battle of Plataea is considered as the final major battle during the Persian invasion of Greece. It forms a part of the Persian invasion. So we can say that the Greeks actually defeated the Persians and repelled the invasion. Battle of Plataea was very devastating for the Persians... they lost more than 250,000 men.
That is exciting but horrific. Will mankind ever learn how to avoid brutal wars?
I doubt it.
Humankind is an agressive, territorial and highly combative species.
I can see why you'd say that, however this has proven not to be so. Have a look at the Trap by Adam Curtis, it will very well explain how disturbed notions amplified Hobbes's philosophy in order to create that missconception.