After the dissolution of the Soviet Union, Ukraine found itself in possession of a substantial nuclear stockpile. However, due to financial constraints and geopolitical concerns, Ukraine made the decision to give up its nuclear weapons. The Budapest Memorandum of 1994 provided Ukraine with security assurances, but these guarantees were called into question when Russia seized Crimea and backed separatist movements in Ukraine. The current conflict between Russia and Ukraine underscores the challenges Ukraine faces in terms of security without the backing of nuclear deterrence. The vulnerability of Ukrainian security in the face of Russian aggression is a pressing issue that continues to unfold. The history of Ukraine’s nuclear disarmament and its current struggles with security have significant implications for the region and global politics.