On 3 September, it conducted its sixth nuclear explosive test, involving what it claimed was a two?stage thermonuclear weapon
. This test caused a seismic event of magnitude 6.1.
The ministry added that North Korea "has developed and perfected the super-powerful thermonuclear weapon
as a means to deter the ever-increasing hostile moves and nuclear threat of the US", and to "defuse the danger of nuclear war looming over the Korean peninsula".
And if studies confirm that the bomb was a thermonuclear weapon
- as North Korea claims - it would be a triumph of a different scale: a major technical milestone reached well ahead of predictions, putting the world's most destructive force in the hands of the country's 33-year-old autocrat.
The shape shows a marked difference from pictures of the ball-shaped device North Korea released in March last year, and appears to indicate the appearance of a two-stage thermonuclear weapon
, or a hydrogen bomb, said Lee Choon-geun, senior research fellow at state-run Science and Technology Policy Institute.
3 (BNA): U.S President Donald Trump a telephone call Saturday with Japanese Prime Minister, Shinzo Abe, and discussed with him the North Korea's escalating threat." In a statement, the White House said that the two leaders "reaffirmed the importance of close cooperation between the United States, Japan, and South Korea in the face of the growing threat from North Korea." The statement added that "Trump noted that he looks forward to continued trilateral coordination on the margins of the United Nations General Assembly." The conversation between the President Trump and Prime Minister Abbe followed Pyongyang's announcement that it had developed a more advanced thermonuclear weapon
that possesses huge destructive power.
Tornadoes are destructive events but a tornado isn't even in the same realm as an atomic bomb, which in turn is dwarfed by the destruction inherent in a thermonuclear weapon
"The rapid development of nuclear technology, exemplified by the mating of the thermonuclear weapon
to the long-range missile," George Reed commented, "required accompanying developments in organization and doctrine," a challenge the new Kennedy administration and its fresh-faced technocrats, like Defense Secretary Robert McNamara, would soon take on.
But the really big difference between India and China arises from the fact that India's thermonuclear weapon
capability is suspect.
Green apparently does not know that the British thermonuclear weapon
tests took place in the middle of the Pacific and not in Australia (as he suggests on p.45).
It is what the agreement says about the willingness of the US to stand up to India, particularly when it comes the possibility of an Indian nuclear test such as one that clearly shows ability to develop a two-stage thermonuclear weapon
. That is what I would worry about if I were China," Pomper says.
A team of research divers visited Bravo crater, ground zero for the test of a thermonuclear weapon
in the remote Marshall Islands on March 1, 1954, and found large numbers of fish and coral growing, although some species appeared to be locally extinct.
Along with an increase in the number of weapons came dramatic growth in their nominal yield: from the 20-kiloton atomic bombs, the original mainstay of the arsenal, came the multimegaton thermonuclear weapon
. Though believing that nuclear war would be an unprecedented catastrophe, the president and his secretary of state recognized the necessity of preparing for all military contingencies, even those they disliked.