Climate change is a global challenge that has broad and complex impacts on global security. In recent years, various studies have shown that the impacts of climate change could exacerbate social tensions, conflicts and other security problems around the world. One of the most significant impacts is the increase in the frequency and intensity of natural disasters, which cause huge economic and social losses. As global temperatures rise, extreme weather phenomena such as floods, droughts and storms become more common. Floods caused by heavy rains can destroy infrastructure, while prolonged droughts can result in crop failure. This has the potential to disrupt food security, which in turn increases the risk of food insecurity in many regions, especially in developing countries that depend on agriculture. This uncertainty can lead to social tension and unrest. Continuing to a more complex area, the impact of climate change also contributes to mass migration. As land becomes unproductive and water resources become increasingly depleted, many communities are forced to look for safer and more suitable places to live. This migration often adds to the burden on areas already experiencing conflict or crisis, creating new tensions between indigenous populations and refugees. In addition, climate change is exacerbating tensions between countries. Competition over increasingly limited resources, such as water and fertile land, often triggers conflict. Regions such as the Middle East and Sub-Saharan Africa, which are already experiencing socio-economic problems, are particularly vulnerable to these impacts. With populations continuing to increase and climate change worsening living conditions, political instability may increase. From an economic perspective, countries that depend on natural resources, such as oil and gas, also face risks. The policy shift towards renewable energy due to global awareness about climate change could cause economic shocks and trigger domestic conflicts. Companies that do not adapt to regulatory and market changes can experience large losses, potentially increasing social tensions. Militaries and armed forces in various countries increasingly understand the impact of climate change on their national security. Many countries are starting to incorporate this issue into their defense strategies and are preparing for more frequent natural disasters and possible conflicts fueled by dwindling resources. Thus, it is important for global leaders to understand and face the challenges of climate change cooperatively. International cooperation, technological innovation and policies that support sustainability are key in responding to threats arising from climate change. Sustainability-oriented policies can help reduce the negative impacts of climate change and create a safer and more stable environment for all humans.