The authoritative guide to ensuring science and technology make life on Earth better, not worse.

South Korea

North Korea sent troops to Russia. The reason(s) are “left to be seen”

By François Diaz-Maurin | Nuclear Weapons

Question for the candidates: How will you reassure allies worried about the credibility of the US security guarantees?

By Sara Bjerg Moller | Nuclear Weapons

Question for the candidates: How will you deter North Korea’s aggression without deteriorating the situation on the Korean Peninsula?

By Eliana Johns | Nuclear Weapons

Why North Korea may use nuclear weapons first, and why current US policy toward Pyongyang is unsustainable

By Robert E. Kelly | Nuclear Risk, Nuclear Weapons

The guided-missile destroyer USS Chafee launches a Block V Tomahawk cruise missile, the weapon's newest variant, during a three day missile exercise. (U.S. Navy photo by Ensign Sean Ianno)

Why the US fixation on increased nuclear capability won’t deter China but could lead to instability and nuclear war

By Andrew Facini | Nuclear Weapons

Bigger isn’t always better: Why the US fails to deter North Korea, despite nuclear superiority

By Lauren Sukin | Nuclear Weapons

Watching Ukraine, South Korea and Japan eye nuclear weapons. Here’s what the US should do.

By Sayuri Romei | Nuclear Weapons

Donald Trump and Kim Jong-un shake hands

The US must trade muscles for diplomacy to end the North Korean nuclear crisis

By Colleen Moore | Nuclear Weapons, Opinion

South Korean President Yoon aiming a large gun

Nuclear weapons gaffe in South Korea is a warning to leaders everywhere

By Janani Mohan | Nuclear Weapons, Opinion, Voices of Tomorrow

The US has a new nuclear proliferation problem: South Korea

By Lauren Sukin | Nuclear Weapons

Poll: Americans, Japanese, and South Koreans don’t support using nuclear weapons against North Korea

By David M. Allison, Stephen Herzog | Nuclear Risk, Nuclear Weapons

Will Seoul and Washington make Riyadh nuclear-weapons ready?

By Henry Sokolski | Nuclear Energy, Nuclear Weapons