This book examines publicly available documents on civil and military space policy, strategy and doctrine, and highlights new trends and developments in military space strategy. Bert Chapman collects public documents from Australia, Canada, the European Union, NATO, the United States and the United Kingdom from 2017 onwards to illustrate the critical importance of space for national and international security, as well as for various areas of the civilian economy and personal life, including climate change, food security, personal and global communications, and the potential for expanded space exploration. Given recent revelations that Russia may be capable and willing to detonate nuclear weapons in space to damage civilian and military space infrastructure belonging to the United States and other countries, and given China's growing assertiveness and capabilities in space, it is more important than ever that civilian readers have access to the necessary background information to analyse publicly available space strategy documents so that they can effectively participate in their governments' legislative and regulatory decision-making processes.