
Nuclear weaponry is no longer a mere military instrument. It has become the symbol of a deeper question, that of state security in a world where the effectiveness of international guarantees keeps eroding. The war in Ukraine, the persistent tension surrounding Iran, and North Korea’s survival despite its isolation all bring the same question back to the forefront: how can states still protect themselves within an increasingly unstable international order? Ukraine, or the Lesson of Abandoning Deterrence Ukraine represents the most debated case. Having relinquished its nuclear arsenal in exchange for international security guarantees, it found itself confronted with the Russian invasion. Since then, the question has resurfaced with even greater force: do political guarantees alone suffice to protect states against major threats?















