“National and International Security in Contemporary Changing Reality” is a compelling, must-read work for those who study and try to gain a better understanding of today’s national and international security environment. A collection of diverse views of Polish and international authors on military, security, international relations, new forms of warfare such as cyber-terrorism and challenges they bring about allows the reader not only to see the whole complexity and interdependencies of the current security network, but creates a solid foundation for any further studies, especially for those readers who wish to obtain a better understanding of the Polish and other former Warsaw Pact countries’ perspective on the current and future role of international organizations such as NATO and the EU. While discussing security and defense from many different angles, authors – whose backgrounds are diverse and who jointly represent a vast and profound experience in defense-related matters – invite the reader to embark on a fascinating journey through the modern world of multifaceted security relations, links among sometime remote areas of defence-related studies, and challenges that not only NATO and its members but all the nations of the modern world must face and live up to.