Unilateral action on Northern Irish Brexit rules is wrong, Sinn Fein tells UK PM

FILE PHOTO: Mary Lou McDonald of Sinn Fein speaks to the media next to Conor Murphy and Michelle O’Neill after their meeting with British Prime Minister Boris Johnson at the Hillsborough Castle, in Hillsborough, Northern Ireland, May 16, 2022. REUTERS/Peter Nicholls

HILLSBOROUGH, Northern Ireland (Reuters) -Sinn Fein President Mary Lou McDonald said her party had a "fairly tough" meeting with British Prime Minister Boris Johnson on Monday in which they told him taking unilateral action over post-Brexit trade rules for Northern Ireland would be wrong.

Johnson says the European Union must make concessions on the rules - known as the Northern Ireland protocol - to win over the province's unionist community loyal to the United Kingdom, and has threatened unilateral action that the EU says could start a trade war.