Speculation is mounting about whether Iran's supreme leader has approved nuclear weapons development after June's conflict with Israel devastated its nuclear programme. US intelligence says no. View o ...

How small can a nuclear weapon really get. Explore the science and limits behind nuclear weapon design and how size impacts ...

When Iran’s covert nuclear program came to international attention over two decades ago, Tehran insisted that its intentions were peaceful and that it had no plans to develop nuclear weapons.

There is no such thing as a “small” nuclear war. Even limited use would trigger mass death, famine and global collapse.

Add Yahoo as a preferred source to see more of our stories on Google. Small, possibly portable, nuclear reactors that can’t melt down are moving toward reality in the United States, with what may be ...

In recent days, Iran targeted Israel’s nuclear facility in the southern town of Dimona, injuring more than 100 people. The ...

Although President Trump has claimed Iran was weeks away from developing a nuclear weapon, much more work was needed for the country to do so ...

Liz Muller convinced her dad Richard to forego retirement and become an entrepreneur. The result is a revolutionary approach ...

Nuclear weapons experts who were involved in U.S. efforts to sanction and contain Iran say the decision to attack the country ...

Add Yahoo as a preferred source to see more of our stories on Google. BALTIMORE — Small, possibly portable, nuclear reactors that can’t melt down are moving toward reality in the United States, with ...