• Iran’s nukesIAEA Monitors Allowed to Service Cameras at Sensitive Nuclear Sites

    An agreement has been reached between Iran and the IAEA to allow international inspectors to service surveillance cameras at Iran’s sensitive nuclear sites and to continue filming there. The agreement, announced Sunday, averts a diplomatic showdown this week.

  • Radiation detectionRadSecure 100 Radiological Security Initiative Launched in 100 U.S. Cities

    The RadSecure 100 Initiative focuses on removing radioactive material from facilities where feasible and improving security at the remaining facilities located in 100 metropolitan areas throughout the United States. Partnerships with local medical facilities, industrial firms, and law enforcement will be key to the project.

  • Iran’s nukesIran's Uranium Metal Production Concerns U.S.

    Report issued by the International Atomic Energy Agency (IAEA) in Vienna to member nations noted inspectors have confirmed Iran produced 200 grams of uranium metal enriched up to 20 percent. Uranium metal can be used to build the core of a nuclear bomb.

  • Nuclear weaponsWith Redesigned “Brains,” W88 Nuclear Warhead Reaches Milestone

    The W88 nuclear warhead entered the stockpile in late 1988 and is deployed on the Navy’s Trident II submarine-launched ballistic missile system onboard Ohio-class ballistic missile submarines. The weapon was beyond its original design life, and several updates were required to address aging issues and to maintain its current state of readiness.

  • Nuclear forensicsInternational Nuclear Forensics Group Examines Nuclear Security Challenges

    The Nuclear Forensics International Technical Working Group (ITWG) was established in 1995 when nuclear materials were being smuggled out of the former Soviet Union and into Europe. Last month the ITWG held its annual meeting virtually.

  • IranIran “10 Weeks Away” from Weapon-Grade Uranium

    Israel’s defense Minister Benny Gantz to foreign diplomats that Iran is now only ten weeks away – if it decided to move forward – from enriching sufficient quantities of uranium to weapon-grade level, so that it would have available the fissile material needed for a nuclear weapon.

  • IranIran’s Strategic Challenge to Israel

    In a report prepared for the newly elected president of Israel, the Institute for National Security Studies (INSS) highlights the main strategic challenges facing Israel and policy recommendations for addressing those challenges.

  • Nuclear powerInvestigating Materials for Safe, Secure Nuclear Power

    By Steve Nadis

    A longstanding interest in radiation’s effects on metals has drawn Michael Short into new areas such as nuclear security and microreactors.

  • Weapon testingNew Weapons Testing Capability Produces Richer Data, Saves Time, Cost

    A team of Sandia National Laboratories engineers developed a new testing capability in support of the lab’s nuclear weapons mission. The new weapons testing capability produces richer data, and saves time and cost. “Superfuge” test combines multiple environments on a full-scale weapons system.

  • China watchU.S. Concerned About Report China is Expanding Missile Silos

    By Lin Yang

    Using images provided by the satellite imaging company Planet, researchers found that China is building 119 silos in the desert of the northwestern province of Gansu.The expansion of the number of launch silos for China’s arsenal of intercontinental range ballistic missiles raises fears that nuclear weapons will become a new issue of contention between Washington and Beijing.

  • Iran’s nukesIran Says It Foiled “Sabotage Attack” on Nuclear Building

    State media said the attack occurred near Karaj, some 40 kilometers west of Tehran. Iran has experienced a series of suspected sabotage attacks targeting its nuclear program in recent months.

  • Iran’s nukesReflections on Iran’s Production of 60% Enriched Uranium

    By David Albright and Sarah Burkhard

    As of about June 14, Iran had reportedly produced 6.5 kg 60% enriched uranium (hexafluoride mass) or 4.4 kg uranium mass only. Iran has produced 60% enriched uranium at an average daily rate of 0.126 kg/day since May 22. Iran’s activity must be viewed as practicing breakout to make enriched uranium for use in nuclear weapons.

  • BOOKSHELF: Mutually Assured DestructionThe Cold Comfort of Mutually Assured Destruction

    By Jasen Castillo

    Decades after the end of the Cold War, scholars have begun to cast doubt on what has been taught about nuclear weapons in graduate schools – especially the notion of “nuclear revolution,” that is, that the condition of mutually assured destruction (MAD) would promote stability among the great powers. If nuclear weapons-based deterrence is not robust, but rather delicate, then “This is a book that the field of security studies will need to grapple with, since it overturns much of what scholars believe about nuclear deterrence,” Jasen Castillo writes.

  • Nuclear weaponsGlobal Nuclear Arsenals Grow as States Continue to Modernize

    A new report finds that despite an overall decrease in the number of nuclear warheads in 2020, more have been deployed with operational forces. The nine nuclear-armed states together possessed an estimated 13 080 nuclear weapons at the start of 2021, a decrease from the 13 400 at the beginning of 2020, but the estimated number of nuclear weapons currently deployed with operational forces increased to 3825, an increase from 3720 last year.

  • Nuclear weaponsResearchers Look at Nuclear Weapon Effects for Near-Surface Detonations

    Researchers have taken a closer look at how nuclear weapon blasts close to the Earth’s surface create complications in their effects and apparent yields. Attempts to correlate data from events with low heights of burst revealed a need to improve the theoretical treatment of strong blast waves rebounding from hard surfaces.