Signatories of the landmark nuclear non-proliferation treaty began a meeting at the UN on Monday as fears of a renewed arms race escalate, with atomic powers once again at loggerheads over safeguards.

Editor’s note: This is part of the “Nuclear winter: Why study it now?” series. The Russian invasion of Ukraine has revealed how easily modern, interconnected food systems can be disrupted by armed ...

Since the Ukraine war began four years ago, Putin has issued dozens of explicit or implicit nuclear threats. Depending on the methodology used, some analysts estimate that Putin’s nuclear threats have ...

President Trump’s attack on Iran and his proposal to resume U.S. nuclear weapons testing has jolted Americans back to a darker era of Cold War brinkmanship, when impulsive decisions could push the ...

Eight decades after the introduction of nuclear weapons, [1] hindsight shows that the interest in this emblematic weapon system of the second half of the 20th century has always been heightened by the ...

LONDON — With a U.S. naval blockade taking effect on Monday, oil prices again surging past $100 a barrel and a fragile ceasefire set to expire in nine days, the United States and Iran began the week ...

It has become a constant refrain from Democrats: President Donald Trump’s decision to go to war in Iran backfired, leaving Tehran stronger than it was before. “How has this in any way made things ...