Here’s a thought experiment for British readers.
Suppose Scotland and Wales were not part of the United Kingdom. Suppose Scotland was effectively controlled by… oooh, I dunno, let’s say, Russia, which had installed underneath residential buildings throughout southern Scotland 120,000 missiles pointing at England which Russia repeatedly threatened, in the most demented and blood-curdling terms, to annihilate.
What do you think the English government would do? What do you think NATO might say or do?
Now suppose that Wales, which for decades had been inhabited by people who had long pledged to annihilate England and who – now also backed by Russia – had repeatedly attacked it over the years with missiles; who had for months been trying to storm the border with England and attacked it with aerial incendiary devices, as a result of which thousands of acres of English farmland had been incinerated and destroyed; and who had also been building tunnel networks running into England through which they intended to infiltrate the country and slaughter as many English people as possible.
What do you think the English government would do?