World War I: You're One War Short of World War II

“In 1914, Europe's rulers were like sleepwalkers, stepping one by one into traps of their own making. They came from an old world that had long known peace, yet used the most modern means to destroy it and open the gates to a darker age. This history was less a beginning than the end of an era, and the manner of its ending foretold all the tragedies of the age to come.”