Ben Carson

Those of us who believe in God and derive our sense of right and wrong and ethics from God's Word really have no difficulty whatsoever defining where our ethics come from. People who believe in survival of the fittest might have more difficulty deriving where their ethics come from. A lot of evolutionists are very ethical people.

What is and isn't justified by military necessity is, naturally, open to interpretation. One of the key concepts, though, is the law of proportionality. A military attack that results in civilian casualties - 'collateral damage' - is acceptable as long as the military benefits outweigh the price that is paid by humanity.