In the second half of the twentieth century, the United States engaged in the most ambitious and far-reaching liberal order building the world had yet seen. This liberal international order has been one of the most successful in history in providing security and prosperity to more people. But in the last decade, the American-led order has been trou "The book elaborates on how America crafted and created 'cooperative security'--arguably the most important innovation in national security in the 20th century."---Wang Yong, Shanghai Daily