The former chief negotiator of the European Union for the future relationship with the United Kingdom, Michel Barnier, warned on Thursday 28 January that if London’s “intentions” are to diverge on “working hours, pesticides or agricultural products, if these divergences turn into distortions of competition causing job destruction in the EU, then we will use all the tools” allowed by this international treaty.
Mr Barnier was speaking about the post-Brexit agreement between the EU...