UK's Frost to EU: Stay calm and don't threaten retaliation

FILE PHOTO: British Prime Minister Boris Johnson's Europe adviser David Frost leaves the European Commission headquarters after a meeting with officials in Brussels, Belgium, October 7, 2019. REUTERS/Francois Lenoir/File Photo

LONDON (Reuters) -British Brexit minister David Frost said on Wednesday that Brussels should stay calm and avoid embarking on "massive and disproportionate retaliation" if London follows through on its threat to escalate a post-Brexit trade dispute.

Frost said he wasn't yet ready to give up on talks aimed at finding a solution, but repeated that Britain could trigger emergency unilateral provisions in the Brexit deal, a warning which has increased tensions between the two sides.