Terrorism is a live threat in today’s world – and one that causes immeasurable human suffering. The international community has worked to confront this threat through a patchwork of counterterrorism measures, including sanctions. But despite the legitimacy of those efforts, these measures have negative effects on the provision of humanitarian aid, harming both intended beneficiaries and humanitarian workers, bringing counterterrorism measures into tension with international humanitarian law (IHL). This edition explores the problems that arise when counterterrorism measures and IHL overlap and come into tension. It does so from a variety of perspectives, including diplomats, lawyers, academics, humanitarians and practitioners, with each article looking at how these fields of law can be brought into balance with one another.