UK can't rely on US with Trump as President, his niece tells ITV News

Video report by ITV News presenter Ranvir Singh

Donald Trump's niece has claimed the UK cannot rely on the US with Donald Trump as President.

In a UK broadcast exclusive with ITV News, Mary Trump, who has penned an explosive book detailing her uncle's life and exploits, said British citizens should be worried if Trump wins the upcoming presidential election.

Ms Trump said her book will prove to Britons that her uncle is not a stable leader the UK needs going forward into such a critical time with coronavirus and with Brexit on the horizon.

She told ITV News: "For Britain to make certain decisions going forward, they need to know that they can rely on the United States as an ally. "I don't believe that you guys can at the moment, in a deep way, as, as you were able to in the past."

UK cannot rely on US like it used to, says Mary Trump

Too Much and Never Enough: How My Family Created the World's Most Dangerous Man was published on Tuesday and has become a bestselling hit already, with estimates that the book has sold more than one million copies.

The book lifts the lid on the mindset of the US President and some of the childhood experiences which made the billionaire into the man he is today.

President Donald Trump has been criticised in Mary Trump's new book. Credit: Evan Vucci/AP

Speaking about her book, Ms Trump said her uncle was raised in a "very dysfunctional household" where his father was a "sociopath" and that his mother was "unavailable" to him growing up. "He grew to be an adult who is incapable of negotiating... The world is incapable of looking outside of his own self interests. "And I believe that the story I tell has a lot of explanatory power and that people will benefit from reading it."

Trump lives 'moment to moment'

Speaking about her uncle's mental frame-of-mind, Ms Trump said he lives "moment to moment". "He essentially is stuck on telling himself one story every minute, he's the best, he's the greatest," she said. "He's always winning because if he loses the thread of that narrative he would have to face things about himself that would be unbearable for him. "So he has to engage in a lot of projection and other defense mechanisms to protect himself from that, the reality that he's none of the things he claims to be."