Book excerpt: A global pandemic finds millions swarming across the U.S. border. Major American cities are leveled by black-market nukes. China’s growing civil unrest ignites a global showdown. Pakistan’s collapse leads to a hunt for its nuclear weapons. What if the worst that could happen actually happens? How will we respond? Are we prepared? These are the questions that Andrew F. Krepinevich asks—and answers—in this timely and often chilling book. As a military expert and consultant, Krepinevich must think the unthinkable based on the latest intelligence and geopolitical trends—and devise a response in the event our worst nightmares become reality. As riveting as a thriller, 7 Deadly Scenarios reveals the forces—both overt and covert—that are in play; the real ambitions of world powers, terrorist groups, and rogue states; and the actions and counteractions both our enemies and our allies can be expected to take—and what we must do to prepare before it’s too late.