Ambassador Bill Middendorf makes one unambiguous argument in his new book, The Great Nightfall: Why We Must Win the New Cold War. America won’t survive and thrive in an era of great-power competition without a strong, dominant military. There is one reason for that. China. The Great Nightfall lays out the threat posed by the Chinese Communist Party. It also makes a compelling argument for the kind of military the U.S. needs to match the dangers posed by Beijing.