The Comprehensive Nuclear Test Ban Treaty opened for signature 25 years ago this month but hasn’t yet entered into force.  

In his first UN News interview, the new head of the Comprehensive Nuclear Test Ban Treaty Organization (CTBTO) notes that prior to 1996, when the Treaty opened for signature, around 2,000 nuclear tests were conducted, but since then, only three countries have crossed the line - only one of those, this century.  

For Robert Floyd, nuclear testing remains an existential threat for humanity, with some 13,400 nuclear weapons still primed for use.  

He spoke in New York to UN News’s Alexandre Soares, who started by asking him how CTBTO helps make the world a safer place.