![Publicly shaming Trump could have catastrophic results.](/web/20170206052803im_/http://www.smh.com.au/content/dam/images/g/u/3/9/g/q/image.related.landscape.460x307.gu3yzq.png/1486267614116.jpg)
Turnbull's 'grey rock' move will work on narcissistic Trump
Any world leader who has to deal with Donald Trump should stack their bedside tables with literature on pathological narcissism – it will provide a better playbook for the 45th presidency than libraries political analysis or history.