Head of US nuclear security agency to step down in January
The head of the agency responsible for the US nuclear weapons stockpile said on Friday that he will leave his post in January, six months after three elderly peace activists broke into the government's maximum-security facility for weapons-grade uranium.


The departure of Thomas D'Agostino, the administrator at the National Nuclear Security Administration (NNSA), has nothing to do with the security breach, an NNSA official said. (Reuters)