An opponent is entitled to the same regard for his principles as we would expect others to have for ours. Non-violence demands that we should see every opportunity to win over opponents.
Non-violence ... is the only thing that the atom bomb cannot destroy. I did not move a muscle when I first heard that the atom bomb had wiped out Hiroshima. On the contrary, I said to myself, Unless now the world adopts non-violence, it will spell certain suicide for mankind.