Historian warns WW3 could start if one unnamed country falls, per Daily Express
What happened
According to a Daily Express headline, a historian says a third world war will start if "this one country falls" and that it will be "obscene". The headline does not name the country, and the article text was not provided.
When it started
Unknown. The headline gives no date for the historian's comments or for any event they describe.
How it spread
Only the headline and Google News link were provided, so the historian's reasoning, identity and full remarks are not available. Any detail beyond the headline would need to be checked against the original Daily Express article.
Why it matters
The headline is a warning about possible wider conflict, which is a speculative view attributed to one historian. It is not presented here as a confirmed development, and the basis for the claim is not included in the material provided.