A look at where Russia has gained momentum on the battlefield, but how it could struggle to sustain it.

Radioactive materials are found naturally in the Earth. But even so, saying an area is radioactive can conjure up images of ...

As Washington seeks to resolve the war in Ukraine with peace negotiations, these maps show what each side in the conflict is ...

Ukrainian President Zelensky has accused Russia of launching a drone strike on the Chernobyl nuclear power plant - with a huge fireball seen at the site - but radiation levels are said to be stable at ...