After the dissolution of the Soviet Union, Ukraine found itself in possession of a considerable nuclear arsenal. However, due to financial constraints and geopolitical concerns, Ukraine made the decision to disarm itself of these nuclear weapons. The Budapest Memorandum of 1994 provided security assurances to Ukraine, but these were called into question when Russia annexed Crimea and provided support to separatist movements within Ukraine. The current conflict between Russia and Ukraine underscores the security vulnerabilities that Ukraine faces in the absence of nuclear deterrence. The situation serves as a stark reminder of the complex geopolitical landscape in the region and the challenges that Ukraine continues to navigate. The need for reliable security guarantees and the impact of nuclear disarmament on Ukraine’s security posture remain key issues in the ongoing crisis.