NYU Law professor Samuel Estreicher and Hofstra Law professor Julian G. Ku argue that, with regard to recent armed hostilities in the Gaza Strip, Israel’s use of force likely conformed to applicable international laws of war and was legally justified, whereas Hamas’s actions repeatedly violated the core, bedrock principle that civilians cannot be targeted. Professors Estreicher and Ku point out that the presently known facts support the conclusion that Israel complied with customary international law, codified in the 1949 Geneva Conventions and their subsequent protocols: use of force is limited to (1) situations of military necessity; (2) where the use of force makes a distinction between combatants and non-combatants; and (3) where the use of force is proportionate to the concrete military objective sought to be achieved.