Refugees from that AO can be dangerous.
Just look what happened to the New World when it started taking in masses of refugees from that same, general, area and its near neighbors?
A whole continent of peeps got it in their heads that they didn’t need a king to tell em what to do and the world went upside down.
Old Europe is still confused by it.
Maybe, this is what finally offed the Roman Empire. The Scots and Irish just set the Goths and such up to take the blame. They are sneaky like that, you know.