Nikki Haley, the United States’ ambassador to the United Nations, said Sunday that President Donald Trump's “fire and fury” comment last month about North Korea's nuclear program was not an empty threat.

If the U.S. exhausts diplomatic options on North Korea, the U.S. military would "take care of it," Haley said on CNN's "State of the Union" program Sunday morning. She added that Defense Secretary James Mattis has "an army of options" to destroy North Korea..

“We wanted to be responsible and go through all diplomatic means to get their attention first,” Haley said. “If that doesn't work, General Mattis will take care of it.”

Haley warned that a war would mean the destruction of North Korea.

“If North Korea keeps on with this reckless behavior, if the United States has to defend itself or defend its allies in any way, North Korea will be destroyed,” Haley told CNN. “And we all know that, and none of us want that.”