A state resorting to use of force must comply with the international laws governing armed conflict. In an opinion for CNN, CERL Advisory Council member Mary Ellen O’Connell argues the United States has an opportunity and an obligation to press for greater adherence to the law of war, including by calling for an immediate ceasefire between Israel and Hamas.

Mary Ellen O’Connell is the Robert and Marion Short Professor of Law and Research Professor of International Dispute Resolution—Kroc Institute for International Peace Studies, University of Notre Dame. Read her bio here.

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