Abstract
In this globalized world, we face multiple threats to human security, a powerful supplement to national security. The introduction to this book provides both a history and a definition of human security. Enhanced connectivity in East Asia not only gives rise to serious threats but also provides the means for ensuring people’s security and opportunities for mutual learning. After explaining the three research questions that are aimed at evaluating the practice of human security—sovereignty, coordination and empowerment—the introductory chapter goes on to provide summaries of the following chapters.