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The world is closer to catastrophe than it ever has been, the Bulletin of the Atomic Scientists said on Tuesday. The group's experts called out Russia's invasion of Ukraine and other threats.
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Some experts say Kim Jong Un's push to make more nukes and new weapons systems reflects his hopes to solidify future negotiating power as he heads into prolonged tensions with the U.S. and its allies.
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It's not the first time for such a dire warning. Here's a brief look at why Guterres and others are raising the alarm now.
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In a speech marking the 69th anniversary of the Korean War Armistice, Kim said his country is ready to use nuclear weapons in potential military conflicts with the U.S. or South Korea.
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NATO has rejected the no-fly zone idea because it comes with significant risks.
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Russian President Vladimir Putin gave orders to his nation's nuclear forces over the weekend, but their exact meaning is unclear. Russia has more nuclear weapons than any other nation.
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Russian President Vladimir Putin put Russia's nuclear forces on high alert over the weekend in a significant escalation of his military threat.
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Three decades ago, the newly independent country of Ukraine was briefly the third-largest nuclear power in the world. A lot has changed since then.
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President Biden and three European allies say they are ready to return to the scuttled deal that eased sanctions against Iran, in return for Iran limiting its nuclear program.
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Megan Rice spent two years in federal prison while in her 80s after breaking into a government security complex to protest nuclear weapons.