U.S. Ambassador to the U.N. Nikki Haley dismissed reports of simmering tensions between herself and Secretary of State Rex Tillerson, saying every member of the National Security Council had "different opinions."

"That's so dramatic, that's so ridiculous," Haley told ABC's "This Week." "Sometimes Secretary Tillerson and I have different opinions but when we come into the NSC, everybody has different opinions."

She had "great" relationships with Tillerson, Secretary of Defense Gen. Jim Mattis and "anyone else" "because we're all looking out for the best interests of Americans," Haley continued.

She also said President Trump and Tillerson "work very well together."

"They talk through things and then they manage it properly," Haley said. "If there's an issue, I haven't heard about it."

Haley defended Trump's action on the Iran deal, adding that Iran was not in breach of the agreement and the administration's engagement with Congress over the issue was "something that never happened under President Obama."

"Decertifying implies all of those other things in the U.N. resolution are not happening," she said.

But Haley was non-committal on whether the U.S. would engage in diplomatic talks with North Korea if the rogue nation stopped its nuclear tests.

"Let's wait and see if they stop testing," she said.