“Biosecurity board grapples with how to rein in risky flu studies” (Science)
The National Science Advisory Board for Biosecurity met last week to discuss Gain of Function (GOF) studies. A topic of debate for the past several years, GOF studies involving H5N1 avian influenza and accidents at federal high containment laboratories caused the U.S. government to declare a moratorium in 2014. To find out more about the meeting, including the concerns and recommendations of opponents and researchers, read the article published in Science: http://www.sciencemag.org/news/2016/01/biosecurity-board-grapples-how-rein-risky-flu-studies
The SIPRI chapter describes the nuclear weapon modernization programs underway in each nuclear-armed state and provides estimates for how many nuclear warheads each country possesses.
FAS researchers Hans Kristensen and Matt Korda with the Nuclear Information Project write in the new SIPRI Yearbook 2024, released today.
The total number of U.S. nuclear warheads are now estimated to include 1,770 deployed warheads, 1,938 reserved for operational forces. An additional 1,336 retired warheads are awaiting dismantlement, for a total inventory of 5,044 warheads.
A military depot in central Belarus has recently been upgraded with additional security perimeters and an access point that indicate it could be intended for housing Russian nuclear warheads for Belarus’ Russia-supplied Iskander missile launchers.