From a New York Times guest essay by Jon A. Shields headlined “What Donald Trump Understands About Honor”:

In the modern Republican Party, there has never been anything quite like Liz Cheney’s war with Donald Trump. Whereas once the party’s most heated rivalries were primarily ideological — like the feud between Nelson Rockefeller and Barry Goldwater — today’s have little to do with policy. Instead, they are about rival systems of honor that are remaking identity politics on the right.