With a simple swivel, the pieces spun around to transform the triangle into a square ... together with the categories, used proof by contradiction to find no matching paths.

"I joined the air force 35 years ago, aged 18, and went straight to Germany, based on a Tornado aircraft," says British Air Commodore Andy Turk, who is now deputy commander of the Nato Airborne ...

As that comment highlights, evidence is often contested and proof elusive, including during the pandemic, when many experts were urging governments to “follow the science”. But that irate ...

Jonathan Powell, the UK national security adviser, was “intimately involved” in helping Ukraine and the US reach a ceasefire deal to put to Russia, according to government sources reported by ...