From my previous link:

"In any normal military conflict, Israel would be entirely within its rights to suspend all food shipments, all medical assistance, and all supplies of electricity and water to Gaza until Hamas surrendered, or at least ceased fire. But Israel won't do that. They know full well that Hamas wouldn't be deterred by the suffering of its civilian population. It never is. Even as Israel bombs Gaza, it shows more concern for the people living there than Hamas ever has."