The personality disorder that's steadily shaping global politics

Given that so much of life nowadays has become The World According to Donald Trump, his "coincidental" 75m dollar birthday military parade through Washington nevertheless marks yet another pretentious psychological advance by a megalomaniac with self-obsessive tendencies.

- with Joe Riley

For the record, it is a diagnosable mental health condition known as Narcissistic Personality Disorder (NPD), characterised by a grandiose sense of selfimportance, a need for excessive admiration, a lack of empathy, a sense of entitlement, and excessive exploitation.

A pattern of behaviour shared by Chinese president Xi Jinping - who has the same birthday as Trump, bar a day;