Some two million Palestinian people are trapped inside Gaza, nearly half of them under the age of 18. Most of them are hungry. Bombs have already turned their cities into rubble. More than a million people have been asked to leave their homes. In the Mishneh Torah, Maimonides teaches “when a siege is placed around a city to conquer it, it should not be surrounded on all four sides, only on three. A place should be left for the inhabitants to flee, to escape with their lives.” Egypt and the international community, with cooperation from Hamas and Israel, must open...