Whether they are in Syria, Venezuela, or Liberia, world humanitarian crises that put extensive populations at risk are often understood as mediated (if not ameliorated) by organizations such as Doctors without Borders or the Red Cross. Indeed, understanding the depth of such crises may often come from the statements and information shared by such organizations, which are customarily seen as on-site, objective, and expert. However, Hasian contends that these organizations are not autonomous players but are subject to economic and cultural factors that influence how they testify (the te´moignage of the title) or bear witness to crises. He argues that the political will of these organizations in the face of such factors is what determines if these organizations can offer successful medical advocacy. Hasian's case studies—from Red Cross inaction during the Spanish gas attacks in Morocco in the 1920s to failure of humanitarian organizations to speak out against Western targeting of hospitals in Syria in recent years—reveal how accommodation can undercut political will. A dense read, this book may not necessarily align with coursework in communication or health, but it could be a resource for public health, international studies, and, possibly, public diplomacy. It could also be a valuable research reference for scholars studying cross-cultural communication more broadly.Summing Up: Recommended. Graduate students, researchers, faculty, and professionals.