The world is faced with significant and interrelated challenges in the 21st century which threaten human rights in a number of ways. This book examines three of the largest issues of the century - armed conflict, environment, and poverty - and examines how these may be addressed using a human rights framework. It considers how these challenges threaten human rights and reassesses our understanding of human rights in the light of these issues. This multidisciplinary text considers both foundational and applied questions such as the relationship between morality and the laws of war, as well as the application of the International Human Rights Framework in cyber space. Alongside analyses from some of the most prominent lawyers, philosophers, and political theorists in the debate, each section includes contributions by those who have served as Special Rapporteurs within the United Nations Human Rights System on the challenges facing international human rights laws today.