Pyongyang reacts to US plans to increase its deployment of advanced military assets to the Korean Peninsula, including fighter jets and aircraft carriers.
Washington convinced both India and Pakistan in 2019 that neither was preparing to go nuclear over Kashmir tension, ex-US top diplomat Mike Pompeo claims in his memoir.
Russian President Putin last month proclaimed that the territories Moscow was taking from Ukraine would be part of Russia "for ever". But Russia does not wholly control any of the four regions and has yet to define their borders.
US President Biden says the world is facing nuclear "Armageddon", warning that Vladimir Putin may use his atomic arsenal as Russian troops struggle against a Ukrainian counter-offensive.
Russian President Vladimir Putin made the comments in a letter to participants of a UN conference on the nuclear non-proliferation treaty.
South Korea's President Yoon Suk-yeol issued the warning at his first meeting with the top military commanders since he took office in May.
Number of nuclear weapons in the world is set to rise in the coming decade after 35 years of decline as global tensions flare amid Russia's offensive in Ukraine, says Stockholm International Peace Research Institute.
Seventy-one percent of Americans say the Russian attack on Ukraine has increased the possibility of nuclear weapons being used anywhere in the world.
Worldwide food shortages and mass starvation will follow the deaths as Earth enters a new period of cooling, with temperatures not seen since the last Ice Age, researchers in a new paper say.
The US military says its missile defence system and radar networks will allow it to track and destroy incoming warheads from North Korea or Iran. But a lack of real-world testing raises doubts about US missile defences.
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