Geopolitical stability plays a pivotal role in shaping the global economic landscape, especially concerning foreign investment and transnational corporations (TNCs). This study delves into the intricate relationship between geopolitical stability and these economic factors, employing a case study of the Russia-Ukraine conflict to exemplify their interplay. The Russia-Ukraine conflict, characterized by territorial disputes and political tensions, has had far-reaching consequences on foreign investment and TNCs operating in the region. This study scrutinizes how the conflict's instability has influenced investment decisions and strategies adopted by TNCs. The research combines quantitative and qualitative methodologies, drawing upon economic data, expert opinions, and corporate case studies. The findings indicate a clear correlation between geopolitical stability and foreign investment. In the context of the Russia-Ukraine conflict, periods of heightened instability have witnessed reduced foreign investment as risk perceptions rise. TNCs, concerned about the security of their assets and profitability, tend to adopt a cautious approach during such times. Conversely, when geopolitical tensions ease, foreign investment tends to rebound. Moreover, this study explores the strategies employed by TNCs to navigate geopolitical instability. Companies often implement risk management protocols, diversify their portfolios, and forge partnerships with local entities to mitigate risks associated with geopolitical instability. This research contributes to the broader understanding of the impact of geopolitical factors on global economics.