Pakistan, July 22 -- Nuclear security is ultimately tested not by declarations of responsibility but by the ability of a state to guarantee that its most dangerous materials never fall beyond its control. In the nuclear age, a single failure in storage, oversight, or accountability can transcend national borders and create consequences that no government can contain. This is why every country possessing nuclear or radioactive materials carries a responsibility that extends beyond its own territory. India's growing nuclear ambitions, however, raise difficult questions about whether its security architecture is evolving at the same pace as its strategic expansion.

For years, India has projected itself as a responsible nuclear power, emphas...