Washington (CNN) Former United Nations ambassador Nikki Haley divulged in her forthcoming memoir that former Secretary of State Rex Tillerson and former White House chief of staff John Kelly attempted to recruit her to undermine President Donald Trump in an effort to "save the country," according to The Washington Post.

The two former Cabinet members sought Haley's help in their endeavors to subvert the President but she refused, Haley wrote. The Washington Post obtained a copy of her book, titled "With All Due Respect," ahead of its Tuesday release. CNN has not seen a copy of the memoir.

"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.

At one point, Haley wrote that Tillerson also told her people would die if Trump was unchecked. However, Haley said she supported most of Trump's foreign policy decisions that others in the White House tried to block or slow down, according to the Post.

Haley called Tillerson and Kelly's attempt to subvert the President "offensive" in an interview that aired Sunday on "CBS Sunday Morning."

Read More