[Leaning Right]

It is a sad but undeniable fact that the First World War – in all its murderous horror – was overwhelmingly the result of German expansionism and aggression.

I'm always suspicious of anyone who uses the phrase "undeniable fact". Because that's a clever little way of saying "no debate will be permitted."

[GeronL]

Because that's a clever little way of saying "no debate will be permitted."

Which he is accusing the other side of.