Gultom, E., Supriyadi, A. A., Djati, S. P., Prijanto, P., & Sundari, S. (2026). The Concept of Strategic Leadership in Strengthening Indonesia’s National Defense Resilience in Facing Hybrid Warfare Threats. International Journal of Environmental, Sustainability, and Social Science (IJESSS), 7(4), 1160–1174. https://doi.org/10.38142/ijesss.v7i4.2040