Mounting ecological crises—climate change, biodiversity loss, pollution, and resource depletion—act as “threat multipliers,” undermining livelihoods, intensifying insecurity, and fueling violent conflict. This perspective argues that peace in the twenty-first century must extend beyond the absence of armed conflict to encompass harmony between humanity and the natural environment. Lasting peace, therefore, requires reinvestment in ecosystems as critical foundations for resilience, prosperity, and stability. Cultivating Nature Quotient (NQ)—the capacity to perceive and act upon ecological interdependence—as a prerequisite for leaders and societies to secure peace with nature and safeguard civilization’s continuity.