BBC News
By John Campbell
Published
image captionMichel Barnier describes frustrations dealing with Arlene Foster
The EU's former chief Brexit negotiator says he found it "difficult to stay calm" while meeting the DUP's Arlene Foster and Diane Dodds.
He recounts a meeting with a DUP delegation in Brussels in October 2018 which focused on the backstop.
Mr Barnier writes of his frustration, saying the DUP "oppose everything" and "don't want to hear about the concrete proposals we are making".
He also assessed that Diane Dodds - the party's MEP at the time - and DUP leader Arlene Foster "don't like each other and it shows".