In Response To: Sachur of Cities ()

Perhaps the eruption of Vesuvius had such far reaching repercussions, that by the time they got there they discovered what the Parthians had already known: that climatological changes had permanently altered the value and viability of the land. Thus the Parthians joined their Scythian cousins in the migration north, the Romans decided not to bother once they got there and the whole area was left to the Persians by default, and not conquest.