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Why the sudden increase in pressure from within parts of the Labour Party for Jeremy Corbyn to go?

In this exclusive video, Alex Salmond shares a theory: that it is little to do with Brexit and much more to do with Chilcot.

Sir John Chilcot’s 2.6 million-word report into the Iraq War is finally due to be published on Wednesday, seven years after it was commissioned by Tony Blair’s successor as PM Gordon Brown.

Mr Salmond – who hopes the report will lead to Mr Blair’s impeachment – discusses why sections of the party might have launched their coup not because of Mr Corbyn’s supposedly lacklustre performance in the EU referendum campaign but because they are desperate to avoid the prospect of a serving Labour leader calling for a predecessor’s head.