Moroni 9 Thought Questions

Moroni 9 begins with Mormon’s tender expression of love for his son Moroni, but that sentiment is soon overwhelmed. How bad was their situation?
What factors might have contributed to the complete collapse of military order, martial law, and diplomatic communication at this time?
The question of cannibalism is surely going to come up in Moroni 9:8–10. Is there evidence that this type of behavior was practiced anciently? If so, why would people do this? And why would Moroni include his father’s letter with such gruesome details?
Do genocides really happen? If so, why? And why does the Book of Mormon tell us about this one?