This article analyses Estonia’s strategic response to Russia’s full-scale invasion of Ukraine, emphasising the revival of the total defence concept. The authors argue that it is a shift in Estonia’s deterrence posture – from deterrence by punishment to deterrence by denial that has been pushing this revival. Since the 2010s, Estonia transitioned away from a total defence posture towards a comprehensive defence strategy. This deterrence shift results in bringing back total defence. However, it merges the two defence concepts. Reemerging total defence efforts can be seen in the expansion of Estonia’s conventional defence capabilities, increased military spending, and investments in long-range precision weapons. This conventional focus has brought along a strong push in matters concerning resilience, such as societal preparedness at large and public education. These latter elements are shared among notions of both comprehensive and total defence.