New images assessed by Business Insider show new roadworks, buildings, and modifications, with some sites undergoing rapid ...

Russia's nuclear rules say it can use atomic weapons if the country — or one of its allies — is attacked, especially if the ...

After more than two decades of hard-nosed diplomacy on Iran’s nuclear program, European negotiators are finding themselves ...

Russia and China would be the first nuclear powers to sign a treaty barring use of the weapons in Southeast Asia.

Donald Trump announced that the US will send weapons to Ukraine. The weapons include missiles and air defense systems. NATO ...

Tremendous progress has been made in reducing global nuclear stockpiles and nuclear risks, but we are now heading in the wrong direction. Poised at the beginning of a new, complex, and dangerous ...

As President Trump seeks to cut clean energy funding across the country, nuclear energy emerges as a rare area of bipartisan ...

U.S. Secretary of State Marco Rubio said Thursday that the U.S. and Russia have exchanged new ideas for Ukraine peace talks ...

France nuclear sharing agreement, how it reflects a changed geopolitical reality and what the implications are for American security in the new nuclear age.

In announcing a new weapons package for Ukraine and a ceasefire deadline for Putin, President Trump reversed his previous stance towards Russia’s invasion. But will the weapons have the intended ...

The process of uranium enrichment increases the concentration of U-235, an isotope that can sustain a nuclear chain reaction.

Former national security advisor and HKS faculty member Jake Sullivan says negotiations following the Iran strikes are key ...