The Doomsday Clock is an internationally recognized design that conveys how close we are to destroying our civilization with dangerous technologies of our own making. First and foremost among these are nuclear weapons, but the dangers include climate-changing technologies, emerging... Read More
In this interview, former Los Alamos National Laboratory director Siegfried S. Hecker details one of the world’s great nonproliferation stories—the effort to secure the Semipalatinsk Test Site in Kazakhstan.
In 2009, President Barack Obama announced from Prague’s Hradcany square that “the most immediate and extreme threat to global security” was nuclear weapons in the hands of terrorists, and world leaders listened.
Although the Obama administration has highlighted the need to secure fissile
material worldwide, domestic efforts to secure highly enriched uranium (HEU)
have been sluggish and uninspired. In the post-9/11 era, the United States has