NPR's Scott Simon speaks to David Scheffer, former U.S. Ambassador-at-Large for War Crimes Issues, about the limits of international laws governing how wars are fought.

Featuring Ambassador David Scheffer, current LDNS professor of practice, Senior Fellow of the Council on Foreign Relations, & founding father of the International Criminal Court 

Israel has the right to defend itself and deter further invasion, but foreign policy insiders, and now Sullivan and Biden, are increasingly discussing the thresholds for retaliation, particularly under the covenants of international law. What does that mean for Israel—and Hamas?