New rules would allow Brussels suspend free trade and other benefits agreed with UK.
Nathalie Loiseau says no alternatives have been proposed to Brexit deal. / A senior ally of Emmanuel Macron has told Brexiteers that they must "face reality" over the consequences of leaving the EU.
MEPs urged the European Commission to have clear procedures allowing the EU to take retaliatory measures including sanctions against the UK if it refuses to implement the terms of the Brexit agreement.
The UK risks a trade war with the EU if the next Tory leader and prime minister rip up parts of the Brexit deal for Northern Ireland, an MEP has warned.
Brexit changed attitude and culture in Ireland around issue, says Sean Kelly MEP.