It's a term that's casually thrown around in movies and novels. But what does "DEFCON" mean, and what's the significance of each of its five levels?

Statement from President's office mentions "great" importance of arriving at a common language, attitude and policy for OPEC ...

Iran's President Masoud Pezeshkian said it would be easy to veryfy Iran was not developing atomic weapons, state TV reported ...

DUBAI, February 6. /TASS/. Tehran is ready to let international observers inspect its nuclear facilities so that they can confirm to the world that Iran is not creating a nuclear arsenal, Iranian ...

I would much prefer a Verified Nuclear Peace Agreement, which will let Iran peacefully grow and prosper. We should start ...

No immediate changes to the Savannah River Site's role are expected now that Energy Secretary Chris Wright has been confirmed ...

President Trump should allow Seoul to develop nuclear weapons in return for ending America’s security guarantee.

President Trump’s desire to engage in negotiations is a turnabout from his first term, when he often derided former President ...

During the Cold War, the term strategic forces referred to nuclear weapons deployed on strategic delivery systems: intercontinental ballistic missiles (ICBMs), submarine-launched ballistic missiles ...

While Israeli officials are being careful about criticizing a president who is showering gifts on Prime Minister Netanayhu, ...

The Trump administration’s move to overhaul the agency could tie into a memorandum he issued announcing the U.S. would “impose maximum pressure” on Iran.