Brilliant horsemen and great fighters, the Scythians were nomadic horsemen who ranged wide across the grasslands of the Asian steppe from the Altai mountains in the east to the Great Hungarian Plain in the first millennium BC. Their steppe homeland bordered on a number of sedentary states to the south - the Chinese, the Persians and the Greeks - and there were, inevitably, numerous interactions between the nomads and their neighbours. The Scythians...