North Korean leader Kim Jong Un called for the “rapid expansion” of his country’s nuclear weapons program, escalating tensions with the US and South Korea as the allies conduct joint military drills ...

Stopping nuclear proliferation in the Middle East will require a consistent policy, not just sporadic interventions.

Outer space has emerged as the world's next battlefield, demonstrated by recent cyberattacks on satellites blamed on Russia.

SEOUL, South Korea — North Korean leader Kim Jong Un condemned South Korean-U.S. military drills and vowed a rapid expansion ...

Effectively prioritizing China is only possible if US allies commit to taking a greater share of the defense burden.

Russia-linked hackers hijacked a satellite to beam its Victory Day parade into Ukraine, while U.S. officials warn of nuclear ...

A nuclear engineer explains how the International Atomic Energy Agency monitors peaceful nuclear programs, and why it’s worrisome that Iran stopped cooperating with the IAEA.

The recent 12-day war against Iran is a harbinger of potentially growing nuclear dangers to come.

Some suggested it might be a good idea for some countries to get nuclear weapons; for instance, an Indian bomb might deter China from aggression in South Asia.

The 1980s witnessed mass demonstrations demanding a nuclear freeze. Today, the threat of nuclear war is beginning to enter the public consciousness again.

They have done so because nuclear weapons are dangerous, and because each new nuclear nation further dilutes the awesome power that America had when it was the only one.