After the fall of the Soviet Union, Ukraine inherited a significant nuclear stockpile. However, due to financial burdens and geopolitical risks, Ukraine relinquished its nuclear weapons. The 1994 Budapest Memorandum promised security guarantees to Ukraine, but these proved unreliable when Russia annexed Crimea and supported separatists in Ukraine. The ongoing Russia-Ukraine conflict underscores the vulnerabilities of Ukrainian security without nuclear deterrence. The decision to give up nuclear weapons has left Ukraine exposed to external threats, especially from Russia. This has reignited debates on the importance of nuclear deterrence for Ukraine’s security. The country faces ongoing challenges in defending its sovereignty and territorial integrity, with the conflict in Eastern Ukraine showing no signs of resolution. The international community continues to monitor the situation closely, with concerns about the implications of the conflict on regional stability. As Ukraine navigates these challenges, the question of nuclear weapons and security guarantees remains a complex issue. The need for a comprehensive security strategy to address the evolving security landscape in Eastern Europe is becoming increasingly urgent. The lessons learned from Ukraine’s experience serve as a reminder of the complexities of international security dynamics and the importance of reliable security arrangements in volatile regions.