Wars have been and continue to be part of human culture, in spite of the various international frameworks to prevent them. While the reasons for conflict are varied, this article focuses on the growing role of environmental factors in fueling both internal and external conflicts. The article categorises environmental threats into two main areas: resource issues (scarcity, abundance, and sharing) and climate change. It examines how these threats can impact human security, state security, and ultimately lead to war The overexploitation of limited resources, particularly in areas with rapid population growth and poor governance, is likely to spark or intensify internal conflicts. While abundant resources can support economic development, mismanagement, corruption, and ethnic tensions can turn them into sources of conflict. Sharing resources across borders without fair agreements continues to be a cause of conflict between nations. Climate change exacerbates these problems by reducing the availability and quality of resources, making it harder for governments to protect their citizens and maintain peace. Essentially, the article argues that environmental factors are increasingly important in understanding the roots of conflict and that addressing these issues is crucial for preventing future wars.