This series—featuring scholars from the Futures Lab, the International Security Program, and across CSIS—explores emerging challenges and opportunities that NATO is likely to confront after its 75th anniversary. In the future, NATO should embrace the concept of hybrid warfare and incorporate it into how it deters and defends. Starting with resiliency as the first step, NATO can use its inherent strengths to put adversaries at a disadvantage and strengthen its strategic approach to hybrid warfare.