This book explores the potential of social media as a space for teaching and bringing about sustainable peace. Using cutting-edge research, the editors and authors analyze the fundamental transformations taking place in the digital and interactive public sphere, most recently with the advent of the 'post-truth' age and the impact of this upon young people's perceptions of 'friend' and 'foe'. Peace initiatives at almost every level recognize the importance of education for sustainable peace: this volume examines the opportunities emerging from these societal transformations for both formal and informal education. This book will appeal to students and scholars of social media, peace education and the post-truth age.