The U.S. Navy Tests Fires Its Ultimate Weapon: Underwater Nuclear Missiles

The Navy is also working with the Air Force on refurbishing the Mk-5 re-entry body which will be ready by 2019, senior Navy officials said.

Benedict said the Mk-5 re-entry body has more yield than a Mk-4 re-entry body, adding that more detail on the differences was not publically available.

The missile also has a larger structure called a release assembly which houses and releases the re-entry bodies, Navy officials said. There is an ongoing effort to engineer a new release assembly that will work with either the Mk-4 or Mk-5 re-entry body.

How did a nuclear warhead end up lying in a ditch in Arkansas?

 The Damascus incident isn’t the only accident recounted in the movie, or the most frightening. In 1961 a nuclear-armed bomber broke apart over Goldsboro, North Carolina. One of the bombs was saved from going off by a single safety switch, of the kind you use to turn your lights on and off. And then there were the false alarms that almost led the United States or the Soviet Union to launch an all-out nuclear attack. In researching his book, Schlosser obtained a never-before released government assessment that revealed that between 1950 and 1968 alone there had been over 1,000 accidents, large and small, involving nuclear weapons.

Analyst: North Korea has enough material to make 20 nuclear bombs

A more powerful nuclear test, however, could have unintended consequences, according to earth sciences experts in South Korea.

Data from South Korean scientists submitted to a parliamentary committee on safety administration indicated another man-made earthquake near the Punggye-ri test site could trigger a dormant volcanic mountain, Mount Paektu, local newspaper Maeil Business reported.

Paektu, the official birthplace of former leader Kim Jong Il, is about 75 miles from the nuclear test site. Another earthquake with a 3.0-7.0 magnitude could trigger a volcanic eruption, according to the analysis.

Russia searches for missile defense weaknesses, test fires intercontinental ballistic missile

The primary aim of the missile drill was to test the ICBM’s capability to overcome advanced missile defense systems.
Russia is in the middle of modernizing its strategic and nonstrategic nuclear warheads. (…) Moscow has currently 4,500 nuclear warheads, of which roughly 1,780 strategic warheads are deployed on missiles and at bomber bases. An additional 700 strategic warheads are kept in storage along with approximately 2,000 nonstrategic warheads.

North Korea reportedly arms fighters with ‘nuclear backpacks’ spraying uranium

The radiological imagery led to speculation in South Korean media that the packs might be miniaturized nuclear weapons, a claim that was quickly rejected by North Korea military expert Joseph Bermudez Jr.

“The backpacks are far too small for atomic demolition munitions (ADMs),” Bermudez told NK News in August, after studying close up imagery obtained by this site from Pyongyang.

Turkey coup attempt raises fears over safety of US nuclear stockpile

There are thought to be a total of 180 B61 bombs in Europe, in Germany, Italy, Belgium and the Netherlands as well as Turkey. The tactical weapons are legacies of the cold war and largely seen as militarily obsolete. However, in the absence of a NATO consensus on removing them, they remain in place as tokens of US commitment to Europe’s defense.