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
Recent protests against the exclusion of Chinese scientists from an international conference held in the United States only scratch the surface of the formal and informal system of controls now in place to limit the access of foreign visitors to knowledge production at US research sites.
In this Nuclear Notebook, the authors write about nonstrategic nuclear weapons—starting with the difficulty of finding a universal definition for them. Although the United States and Russia have reduced their nonstrategic stockpiles, significant inventories remain.
In this Nuclear Notebook the authors highlight the key milestones and facts regarding the nuclear pursuits of the first five states to develop nuclear weapons—the United States, the Soviet Union and Russia, Britain, France, and China.
Today, China is the only one of five original nuclear weapon states that is increasing its nuclear arsenal. According to some estimates, the country could “more than double” the number of warheads on missiles that could threaten the United States by the mid-2020s.