Israel needs to decide whether they're at war with Hamas, or whether they're occupying Gaza. If they are at war, they need to withdraw their effective control over the strip and declare war. If they are occupiers, they need to appropriately care for the occupied, as stipulated by the Fourth Geneva Convention. It is not possible to have both. Also, there should be an arms embargo on Israel if they are at war with Hamas.
One student killed, three wounded at Arizona campus during fight (a)
from the article: MESS Report / Israel must change its policy on Gaza blockade