"So, you compromise, because human nature avoids conflict, right? This is what he’s gaming you for because once you compromised, you’ve lost. You've inferred his premise that you have some complicity in the matter otherwise why would you compromise? You are on the defensive and will never get it back."
Josh Marshall at Talking Points Memo discusses "Trump's modus operandi."
And Jonathan Chait in New York asserts that "Social Darwinism Is What Truly Guides Trump."