The defense industrial base—the hundreds of companies that supply the Pentagon with everything from new fighter jets and satellites to magnets and ball bearings—is being actively targeted in cyberspace by China and other adversaries, the head of U.S. Cyber Command warned June 25. 
At the dawn of the Cold War, a simple phrase defined America’s national security strategy: “Peace through strength.” Today, 75 years later, the world faces similarly severe challenges, but this time the United States is struggling to adopt and actualize a similarly decisive policy.