Humanitarian law serves the function of limiting the human suffering caused by war, and as such is very valuable.
It does this only insofar as it is enforced. If it were enforced more, more people would be deterred. If it was enforced less, fewer people would be deterred.
It does this only insofar as it is enforced. If it were enforced more, more people would be deterred. If it was enforced less, fewer people would be deterred.