To have a body is to suffer. Does anyone with a body know peace? Those who understand this detach themselves from all that exists and stop imagining or seeking anything. The sutras say, "To seek is to suffer. To seek nothing is bliss." When you seek nothing, you're on the Path.
You Christians look after a document containing enough dynamite to blow all civilisation to pieces, turn the world upside down and bring peace to a battle-torn planet. But you treat it as though it is nothing more than a piece of literature.
When Christ was about to leave the world, He made His will. His soul He committed to His father; His body He bequeathed to Joseph to be decently interred; His clothes fell to the soldiers; His mother He left to the care of John; but what should He leave to His poor disciples that had left all for Him? Silver and gold He had none; but He left them that which was infinitely better, His peace.
It is open to a war resister to judge between the combatants and wish success to the one who has justice on his side. By so judging he is more likely to bring peace between the two than by remaining a mere spectator.