A surge of satellite activity at China’s remote Lop Nur nuclear site has sent shockwaves through Washington, triggering ...

President Trump has an ad-hoc approach to foreign policy. How well is it working?Guest host Sacha Pfeiffer speaks with ...

Citizen activism and legislative pressures helped stop US nuclear weapon testing. They will be needed again to protect the ...

The Comprehensive Nuclear Test Ban Treaty (CTBT) 1996, which prohibited “any nuclear weapon test explosion or any other ...

President Donald Trump appeared to suggest the U.S. will resume testing nuclear weapons for the first time in three decades, ...

President Trump has argued the U.S. should test nuclear weapons because other countries are doing it. But scientific data suggest they’re not.

Russian President Vladimir Putin says the country will explore the possibility of carrying out fresh nuclear tests after US ...

Russia on Sunday reaffirmed that President Vladimir Putin has not ordered any nuclear tests and that Moscow remains committed ...

President Donald Trump reiterated his call for the U.S. to resume nuclear testing in a video he posted on his social media ...

Trump's comments last month sparked fears of a new nuclear arms race and concerns major powers would restart full testing.