"This new volume presents a holistic scenario of the challenges of providing mental health and psychosocial support to areas around the world with the most vulnerable populations during the tragic COVID-19 pandemic. The book synthesizes over 350 interviews with mental health and psychosocial support (MHPSS) professionals on the ground in 27 countries in three regions of the world, discussing the lack of services and providing strategies for implementing mental health and psychosocial support in such situations going forward. The book is a first look at MHPSS during the COVID-19 pandemic with the hope that it will inspire and generate action for future worldwide mental health and psychosocial support responses. Divided into three sections, the volume first addresses existing guidance for MHPSS from the viewpoint of the International Federation of Red Cross and Red Crescent Societies, considering resilience as an individual and collective activity, and looks at how to engage communities in the time of COVID-19. The second part of the book consists of chapters that takes the reader through the experiences of selected countries in three regions: Central and South America, Western and Sub-Saharan Africa, and four countries in Southeastern Asia. The third section presents a theoretical and practical model for the implementation of MHPSS as part of a humanitarian response at the regional level. This essential book is a call to action for cultural, linguistic, and contextual actions that inform inclusiveness of the most vulnerable and unheard communities and that re-establish resilience through mental health and psychosocial community-led programs. The volume is the analysis by a seasoned humanitarian worker with over 30 years of direct experience with the most vulnerable communities, with contributions from his colleagues. They help frame COVID-19 as a systemic loss of protective factors, where communities collapsed psychologically, socially, and economically"--