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Difficult book to read with my 12 year old son. The topics covered were war, physical abuse, death of a parent, PTSD, and Buddhist concepts (which I just skipped over when reading aloud). My son hated the ending with a passion, "WHAT?!? THAT'S how it ends??? I invested myself for THAT in the end???" I think the ending was exactly how it should have been. Both Pax and Peter grew and grew up throughout this tale. We can make our own conclusions as to where Pax and Peter go from where the story in the book ends.