Weapons-grade plutonium can fuel nuclear reactors known as mixed oxide reactors, but none of these exist in the U.S.

By Greg Torode and Jun Yuan Yong SINGAPORE, May 28 (Reuters) - A conflict between the U.S. and China over Taiwan would risk a ...

U.S. and Iranian negotiators reached a tentative agreement Thursday to extend the ceasefire in the 3-month-old war by 60 days ...

What happens to Iran’s enriched uranium stockpile, including the 970 pounds that it has highly concentrated to near-weapons grade, is one of the primary sticking points as the US and Iran have trudged ...

The White House had signaled Trump was close to a decision on a potential deal, though Tehran denied there was a final agreement on ending the conflict.

Companies say it’s a better way to dispose of the Cold War-era material — and fix a shortage of nuclear fuel. But the plan ...

Tensions between the United States and Iran have intensified amid ongoing disputes over nuclear policy and regional security.

For years, the federal government has been working on turning old, unexploded warheads left over from the Cold War into a ...

Satellite images reviewed by Reuters show Beijing is building a sprawling web of launch pads, bunkers and communications ...

Trump says a decision on extending the ceasefire is imminent, while Tehran insists negotiations are ongoing and no final agreement has been reached ...

Iran’s nearly 970-pound stockpile of uranium enriched to 60% purity has emerged as the biggest unresolved issue in ongoing US ...