“21st Century Political Science: A Reference Book” by John T. Ishiyama provides a comprehensive overview of contemporary political science, covering key concepts, theories, and methods. This definitive reference book addresses pressing global issues, such as globalization, terrorism, and climate change, and explores the intersection of politics with economics, culture, and technology. Ishiyama, a renowned political scientist, brings together expert contributors to examine traditional topics like governance, international relations, and comparative politics, as well as emerging areas like environmental policy, human rights, and cybersecurity. With concise entries, annotated bibliographies, and cross-references, this volume serves as an indispensable resource for students, scholars, and practitioners seeking to understand the complexities of modern politics.