Climate change is deeply relevant security studies, closely tied to military preparedness and human security. In this article, Mahnan Omar discusses how establishing climate security is key to NATO’s security interests. This article explores the multifaceted threats to state and regional security stemming from climate change’s impact on resource availability, geopolitical tension, migration, and military activities. As extreme weather events exacerbate vulnerabilities, especially gendered ones, and create conditions for extremist recruitment, nations are compelled to reconsider traditional security paradigms. NATO can build climate resilience through a triple-nexus strategy that coordinates policy, improves operational planning and readiness, and integrates gender into climate initiatives. Women must be involved at every level, from local communities to policymaking and fieldwork.