NEW YORK 鈥 U.S. President Donald Trump's former UN ambassador, Nikki Haley, alleges in her upcoming memoir that two administration officials who were ultimately pushed out by Trump once tried to get her to join them in opposing some of his policies.

In 鈥淲ith All Due Respect,鈥 Haley said then-Secretary of State Rex Tillerson and then-White House chief of staff John Kelly told her that they were trying to 鈥渟ave the country.鈥 Haley writes that she was 鈥渟hocked鈥 by the request, made during a closed-door meeting, and thought they were only trying to put their own imprint on his policies.

鈥淜elly and Tillerson confided in me that when they resisted the president, they weren't being insubordinate, they were trying to save the country,鈥 Haley wrote. 鈥淚t was their decisions, not the president's, that were in the best interests of America, they said. The president didn't know what he was doing. ... Tillerson went on to tell me the reason he resisted the president's decisions was because, if he didn't, people would die.鈥

The former South Carolina governor said the meeting lasted more than an hour and that they never raised the issue to her again.

Haley's book comes out Tuesday. The Associated Press purchased an early copy.

鈥淚nstead of saying that to me, they should've been saying that to the president, not asking me to join them on their sidebar plan,鈥 Haley wrote. 鈥淚t should've been, 'Go tell the president what your differences are, and quit if you don't like what he's doing.' But to undermine a president is really a very dangerous thing. And it goes against the Constitution, and it goes against what the American people want. And it was offensive.鈥

Trump fired Tillerson in March 2018. Later, Tillerson said the president was 鈥渦ndisciplined鈥 and did not like to read briefing reports. Trump countered, calling Tillerson 鈥渄umb as a rock.鈥

When Kelly was chief of staff, Trump chafed at the orderly processes the general imposed on his freewheeling style and White House operations at large. Trump let him go in December 2018.

When asked to respond to Haley's book, Kelly told CBS' 鈥淪unday Morning鈥 that 鈥渋f by resistance and stalling, she means putting a staff process in place ... to ensure the (president) knew all the pros and cons of what policy decision he might be contemplating so he could make an informed decision, then guilty as charged.鈥

One early reaction to Haley's book came from Trump's Twitter account. After noting the book's release and her book tour, Trump tweeted, 鈥淕ood luck Nikki!鈥

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Associated Press writer Deb Riechmann contributed to this report.