That's some smart diplomacy right there

You'd expect a more, well, diplomatic approach to diplomacy:

The UK has started bypassing Donald Trump over climate change, talking directly to city mayors and other officials committed to trying to reduce greenhouse gas emissions, the new Climate Change Minister has revealed.

Claire Perry, who was appointed to the post after the general election last month, said that British ministers had not “missed an opportunity” to tell the US President that they were disappointed he had decided to withdraw from the Paris Agreement on climate change, the news service Bloomberg reported.

Perhaps the Trump Administration should just declare Ms. Perry persona non grata.  If she wants to meet with mayors, they mayors can fly to the UK.