Yup. They're each strong in their own territories. When the
  fighting happens... that's the job of politics. Ultimately,
  diplomacy is the solution. It's always the solution, eventually.
  I was surprised when this:
  [1]https://en.wikipedia.org/wiki/Conflict_thesis came back to
  life. Growing up, I learned it was a dead idea from the 19th
  century, ending around the snopes trial. Late 90s, started
  seeing people talking that way again. Just got weirder and worse
  and stranger.

References

  Visible links
  1. https://l.facebook.com/l.php?u=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FConflict_thesis&h=5AQG3iXHo