Russia’s annexation of Crimea in 2014 triggered a prolonged geopolitical confrontation with Ukraine, significantly altering regional security dynamics. However, on February 24, 2022, the conflict escalated dramatically when Russia launched a large-scale attack on Ukraine. This conflict marked the most significant military engagement in Europe since World War II.[1] Many analysts interpret Russia’s actions as an attempt to reassert its influence in Eastern Europe and prevent further NATO expansion, particularly Ukraine’s potential membership. In contrast, Ukraine has increasingly sought closer integration with the European Union and NATO, viewing this alignment as essential to ensuring its national security. The United States and its Western allies viewed the escalation as a threat to global peace and international law. [2]
Following the outbreak of the Russia-Ukraine conflict in 2022, the U.S. imposed economic sanctions on Russia, targeting banks, energy exports, and individuals associated with President Putin.[3] At the same time, Ukraine received billions of dollars in economic and military support from the U.S., including humanitarian aid, weapons, and ammunition. To support Ukraine and increase international pressure on Russia, the U.S. coordinated efforts within the United Nations (UN) and worked closely with NATO allies.[4] This issue brief critically examines the U.S. involvement in the ongoing crises between Russia and Ukraine, highlighting how its support has evolved, shifting from short-term assistance to long-term security guarantees. The strategic impacts of these changes under the current U.S. administration are also evaluated.
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