Climate change impacts international security policies by introducing new challenges that threaten global stability. Rising temperatures, sea levels, and extreme weather events can lead to resource scarcity, forcing states to adapt their security strategies. This could result in increased competition over water and arable land, potentially escalating conflicts. Nations may also face pressures from climate refugees, further complicating security dynamics. Consequently, international cooperation on environmental issues becomes essential for addressing these new security threats and ensuring long-term stability.