Nikki Haley, President Donald Trump's former ambassador to the United Nations, claims in a new book that two of his top advisers tried to "undermine" the president in order to "save the country."

Haley, the former South Carolina governor, was asked by "CBS Evening News" about a passage from her new book, "With All Due Respect,” where she claims that former Secretary of State Rex Tillerson and former White House chief of staff John Kelly tried to recruit her into that effort. She says she refused. The Washington Post also reported on the exchange. NBC News has not independently verified the passage.

“Kelly and Tillerson confided in me that when they resisted the president, they weren’t being insubordinate, they were trying to save the country,” Haley wrote. "Tillerson went on to tell me the reason he resisted the president's decisions was because, if he didn't, people would die."

When CBS News asked if Haley stood by the quote, she said, "It absolutely happened. And instead of saying that to me, they should've been saying that to the president, not asking me to join them on their sidebar plan. It 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."

NBC News reached out to Tillerson, who did not immediately provide a comment. Kelly told The Post that if giving Trump "the best and most open, legal and ethical staffing advice from across the [government] so he could make an informed decision is 'working against Trump,' then guilty as charged.”

Kelly also told CBS News that, "if 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."

Haley is rumored to be considering a run for president in 2024.