Jump to search Jump to main navigation Jump to main content Jump to footer navigation

Global Security Newswire

Daily News on Nuclear, Biological & Chemical Weapons, Terrorism and Related Issues

Produced by
NationalJournal logo

Scientist Pleads Guilty in Nuclear Spy Case

A one-time Los Alamos National Laboratory scientist and his spouse confessed in court on Friday to attempting a sale of U.S. nuclear-weapon secrets to Venezuela, the Albuquerque Journal reported.

Physicist Leonardo Mascheroni, 77, and his wife, Marjorie Roxby Mascheroni, respectively face minimum prison terms of 12 months and 24 months for supplying classified weapons information to a federal agent posing as a Venezuelan operative.

The United States has not officially suggested Venezuela was seeking classified data, the Associated Press reported.

Note to our Readers

GSN ceased publication on July 31, 2014. Its articles and daily issues will remain archived and available on NTI’s website.

NTI Analysis

  • There Are No Perfect Nuclear Deals

    Aug. 30, 2015

    Sam Nunn and Richard Lugar urge Congress to support the nuclear agreement with Iran in an op-ed for Politico.

  • CNS Global Incidents and Trafficking Database

    July 29, 2015

    Providing free and open access to centralized information on nuclear and other radioactive material that has been lost, stolen, or is otherwise out of regulatory control, the Global Incidents and Trafficking Database and Report prepared by the James Martin Center for Nonproliferation Studies (CNS) offers researchers and policymakers a unique resource to assess the nature and scope of nuclear security risks.

Country Profile

Flag of Venezuela


This article provides an overview of Venezuela’s historical and current policies relating to nuclear, chemical, biological and missile proliferation.

Learn More →