The Aesiran are a distant race that spends little time in Earthspace. We had minimal diplomatic contact with them before The War began, and even their trading fleets rarely came to our worlds. That contact has increased in the years since Wars End, but they are still far from most of our colonies. Only the Wolfenheim sector has common contact with them, and even that is sporadic. Most Aesiran simply do not travel outside their borders and they like it that way. They have everything they need and everything they want inside their borders. Only some curiosity with the outside worlds keep them trading in trinkets and the like from other civilizations. Were it not for that latent curiosity, few people would see any Aesiran outside their borders.