Nick Cohen wrties in yesterday's Guardian.
Below are the first two paragraphs from the article and then the link to it.
Nationalism always breaks its promises because nationalists hate enemies in their countries more than they hate the enemies of their countries. Millions of American conservatives proved it when they voted for Donald Trump, even though he was an open admirer of a hostile foreign power
Local hatreds, not national security, moved them. They hated Obama more than they feared Putin.
They hated political correctness. They hated – not without reason – the attacks on freedom of speech.
They hated rich liberals and defence lawyers. They hated Black Lives Matter and immigrants speaking Spanish in the shop queue. They hated the “experts” who told them that fossil fuel caused global warming and gun ownership caused crime. For all their patriotism, when it came to the crunch, they cared as little for national security as the “reds” their ancestors condemned in the 20th century.