"This line is that a requirement to comply with legal obligations is to be dismissed as ‘legal purism’.
This line is being promoted at the moment by Brexit minister Lord Frost in respect of the obligations of the United Kingdom under the Northern Irish Protocol (obligations that, of course, Frost himself negotiated and endorsed).
Frost avers that for the European Union to require the United Kingdom to comply with this obligations is to take a ‘purist’ approach."
davidallengreen.com
The EU has always expected third countries to comply with legal agreements. It is time that Frost realised that we are now a third country and if we do not behave honourable it will become more and more difficult to strike deals anywhere in the world as the UK is no longer regarded as trustworthy.