Experts say it's unlikely, but Pakistan's lack of a "No First Use" doctrine for nuclear weapons means it's not impossible.
Trump might leave the Hanoi summit with a end-of-war declaration, but one expert warns that, without specific caveats, to do so could make the peninsula even more dangerous.
The Trump administration argues that Russia deserves the blame for the treaty's collapse, although withdrawal is not likely to restore the country's compliance.
The Swedish anti-nuclear activist led the United Nations to adopt the first legally binding global nuclear ban. Now, she's changing the culture.
Numerous officials from the federal nuclear safety board are saying that it does, and, in the process, puts the health of workers at serious risk.
Trump criticized the Iran nuclear deal, but stopped short of pulling the U.S. out of the agreement.
President Obama just called for extending cuts to U.S. nuclear arsenals. The idea of minimum deterrence is gaining legitimacy.
Analysis: Two longtime opponents of nuclear weapons reflect on heady times as the Obama administration puts disarmament back on the map.