So Boris Johnson is going to ‘do’ Brexit – but what are the actual options? | Jonathan Portes https://www.theguardian.com/commentisfree/2019/dec/16/boris-johnson-do-brexit-options-rhetoric-uk-single-market?utm_term=Autofeed&CMP=twt_gu&utm_medium=&utm_source=Twitter#Echobox=1576507324