Who's a weapons scientist?

Who's a weapons scientist?

from Web Edition | Bulletin of the Atomic Scientists by Sharon K. Weiner

In its most recent report on Iran, the International Atomic Energy Agency (IAEA) argues the country may be close to being able to develop a nuclear weapon. The agency also claims that important technical help was provided by an outside expert, identified by other sources as Vyacheslav Danilenko, a researcher who, until 1989, had worked for three decades at a leading Soviet nuclear weapons research and design institute.