“A related question is if the EU must formally change its mandate or not.
“I remember last autumn we were told often the EU had to change its mandate if we wanted a different outcome on the Northern Ireland backstop.
“To my knowledge it never did, formally, but nevertheless changed its position.”
Responding to committee chair Hilary Benn, Mr Frost added: “If you’re asking do we think the EU needs to evolve its position to reach an agreement, yes, we do.”
More to follow…
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