NATIONAL DEFENSE STRATEGY As we expand the competitive space, we continue to offer competitors and adversaries an outstretched hand, open to opportunities for cooperation but from a position of strength and based on our national interests. Should cooperation fail, we will be ready to defend the American people, our values, and interests. The willingness of rivals to abandon aggression will depend on their perception of U.S. strength and the vitality of our alliances and partnerships. Be strategically predictable, but operationally unpredictable. Deterring or defeating long-term strategic competitors is a fundamentally different challenge than the regional adversaries that were the focus of previous strategies. Our strength and integrated actions with allies will demonstrate our commitment to deterring aggression, but our dynamic force employment, military posture, and operations must introduce unpredictability to adversary decision-makers. With our allies and partners, we will challenge competitors by maneuvering them into unfavorable positions, frustrating their efforts, precluding their options while expanding our own, and forcing them to confront conflict under adverse conditions. Integrate with U.S. interagency. Effectively expanding the competitive space requires combined actions with the U.S. interagency to employ all dimensions of national power. We will assist the efforts of the Departments of State, Treasury, Justice, Energy, Homeland Security, Commerce, USAID, as well as the Intelligence Community, law enforcement, and others to identify and build partnerships to address areas of economic, technological, and informational vulnerabilities. Counter coercion and subversion. In competition short of armed conflict, revisionist powers and rogue regimes are using corruption, predatory economic practices, propaganda, political subversion, proxies, and the threat or use of military force to change facts on the ground. Some are particularly adept at exploiting their economic relationships with many of our security partners. We will support U.S. interagency approaches and work by, with, and through our allies and partners to secure our interests and counteract this coercion. Foster a competitive mindset. To succeed in the emerging security environment, our Department and Joint Force will have to out-think, out-maneuver, out-partner, and out-innovate revisionist powers, rogue regimes, terrorists, and other threat actors. We will expand the competitive space while pursuing three distinct lines of effort:  First, rebuilding military readiness as we build a more lethal Joint Force;  Second, strengthening alliances as we attract new partners; and  Third, reforming the Department’s business practices for greater performance and affordability. Build a More Lethal Force The surest way to prevent war is to be prepared to win one. Doing so requires a competitive approach to force development and a consistent, multiyear investment to restore warfighting readiness and field a lethal force. The size of our force matters. The Nation must field sufficient, capable forces to defeat enemies and achieve sustainable outcomes that protect the American people and our vital interests. Our aim is a Joint Force that possesses decisive advantages for any likely conflict, while remaining proficient across the entire spectrum of conflict. 5