In war, one uses the maximum amount of force necessary to achieve the enemy's surrender. So far, Israel hasn't done this. Otherwise, there wouldn't be a single house standing or a single terrorist left alive in Gaza.
U.S. to deliver 8 advanced F-16s to Egypt on July 30-31, U.S. embassy in Cairo says (Reuters)
from the article: Gaza's 96 dead include farmers, water sellers and the girl next door