The Russia-Ukraine war, which began in February 2022, has significantly impacted the global economic landscape, with profound effects on the United States economy. This paper provides a comprehensive analysis of these impacts [3]. The study highlights how the conflict has disrupted supply chains, escalated inflation, and influenced U.S. monetary and fiscal policies. Key findings indicate that higher energy and food prices have accelerated inflation, leading the Federal Reserve to increase interest rates and implement quantitative tightening measures [12]. Concurrently, the U.S. government has responded with substantial fiscal measures, including increased defence spending, energy sector support, and economic aid packages [17]. The paper also discusses the broader implications of the war on global trade, supply chains, and geopolitical alliances. By examining the interplay between these factors, the study provides insights into the policy measures needed to mitigate the adverse effects of the conflict and enhance economic resilience. The findings underscore the importance of adaptive strategies and international cooperation in navigating the complex economic challenges posed by the Russia-Ukraine war.