The aid workers killed in the Israeli attack were three Britons, a Pole, an Australian, a Canadian with dual American nationality and a Palestinian. David Cameron called them “heroes,” offered his condolences to the families and demanded that Israel “deconflict” and allow access to “at least 500 trucks of aid daily” There is a chance that moment will crystallize growing fears about Israel's conduct and whether it is respecting international law.

The killing of the aid workers has revived attention on whether Israel is complying with international law in its conflict with Hamas.