Like the Scythians , and like the Persians when they first came to West Asia , the Parthians were nomadic people .
Around 300 BC , the Parthians invaded West Asia from Siberia in the north .
Like the Scythians , and like the Persians when Parthians first came to West Asia , the Parthians were nomadic Parthians .
Around 300 BC , the Parthians invaded West Asia from Siberia in the north .