North Korean leader Kim Jong-un oversaw the country's tactical nuclear operation training that was held over the past few days, the state news agency reported
UN experts report that North Korea is testing nuclear triggering devices and that its preparations for another nuclear test were at a final stage in June, quoting information from unnamed countries
South Korean President Yoon Suk-yeol said on Friday that North Korea is ready to conduct a nuclear test at any time it decides
South Korea's top diplomat said that North Korea has completed preparations for a new nuclear test and that only a political decision by the country's top leadership can prevent it from going forward
On Wednesday, Kim presided over the fifth enlarged plenary meeting of the party's eighth Central Committee, the North's official Korean Central News Agency (KCNA) said
Compared with existing reactors, small modular reactors would generate up to 5.5 times more spent nuclear fuel per unit of power
South Korean military said that it is keeping close tabs on North Korea's nuclear facilities amid reports Pyongyang may soon carry out a nuclear experiment
US President Joe Biden and his new South Korean counterpart Yoon Suk-yeol will search for ways on Saturday to break a diplomatic stalemate with North Korea
Codenamed "Smiling Buddha", India became world's sixth nuclear power outside the five permanent members of the United Nations
North Korea has a history of trying to rattle new govts in Seoul and Washington to gain leverage in future negotiations. But if Kim orders a nuclear test, Yoon would be left with very limited options
On Tuesday, North Korean leader Kim Jong Un said his country will continue to boost its nuclear potential
The Nuclear Weapons Ban Monitor has found no evidence, however, that any of the nuclear-armed states currently have the will to purposefully pursue nuclear disarmament
The US and South Korea continue to adjust their joint defense capabilities to meet ever increasing threats from North Korea's advancing nuclear and ballistic missile capabilities
The US has called on North Korea to refrain from further provocations and instead return to dialogue.
North Korea appears to be continuing restoration work at the Punggye-ri nuclear test site, including the construction of a tunnel entrance
Seismic activity induced by nuclear tests is not unusual, and has been documented at other major nuclear test sites such as the Nevada Test Site in the US and the former Soviet Union's Semipalatinsk
Kim Jong Un underscores his vow not only to improve his country's capabilities, but mass produce and deploy more weapons.
South Korea is closely monitoring the possibility of North Korea holding an event celebrating its 2017 launch of an intercontinental ballistic missile (ICBM)
Book review of Fire and Fury: Transforming India's Strategic Identity
The authors looked at correlations between energy policy and emissions. They noticed that countries pursuing nuclear power don't tend to have significantly lower levels of carbon emissions