This book is a broad-ranging masterpiece going from past to present-day and presents Kissinger’s understanding of the world order. It sheds light on the ways one manages international relations. From his perspective as a diplomat and a politician, Kissinger applies his extensive theoretical and practical experience from his 60-year diplomatic career to summarize the impact of the Westphalian system on the regional order in Europe, the Middle East and Asia. He explores the United States, China and Iran, the key countries influencing the world order, and analyses the challenges and opportunities of the current situation, and draws a reasonable prediction of the development of the world order.