John Heilemann: Trump Believes by Attacking People He Gets Inside Their Heads and Unnerves Them

EXCERPT:

HEILEMANN: "There are a lot of ways in which Trump is intemperate, and he does things as a matter of instinct and not calculation. I do think that one of the things he’s done over the course of his time of politics is he’s not just lashing out, he likes to — he believes by attacking people in certain ways he gets inside their heads and unnerves them. He did it to Marco Rubio, he did it to Ted Cruz and various of his opponents in the ‘16 race."