8 October 2017

Measuring radiation doses in mass-casualty emergencies

KEVIN CAMPHAUSEN
4 OCTOBER 2017

For the first time since 1981, when China deployed the DF-5 intercontinental ballistic missile, a new state has gained the capability to target the United States with a nuclear weapon. On July 4 and again on July 28, North Korea launched the Hwasong-14—a two-stage, liquid-fueled ballistic missile that demonstrated the capability to reach the continental United States. The US intelligence community assesses that North Korea has nuclear warheads compact and light enough to fit on the Hwasong-14 and that North Korea will be able to deploy a nuclear-armed intercontinental ballistic missile within one or two years. North Korea demonstrated another new capability on September 3, testing what it claimed was a thermonuclear weapon. While the exact configuration of this “advanced nuclear device” remains unknown, the device’s estimated yield is 140 kilotons, so the test represents a quantum leap in the destructive potential of North Korea’s nuclear arsenal.

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