CHERNOBYL, Ukraine — There is a massive scar on the only thing standing between a decades-old nuclear disaster and the potential for another. The tomb burying the remains of the catastrophic ...

But war was a scenario its engineers never envisioned. A Ukrainian air defense unit illuminating a hole in the steel shield at the Chernobyl nuclear power plant last month. The fire started by the ...

The purpose of this report is to update findings of the International Nuclear Safety Advisory Group’s Summary Report on the Post-Accident Review Meeting on the Chernobyl Accident (INSAG-1), published ...