The head of NATO said on Sunday that he “absolutely” believes President Trump is committed to the historic alliance.

The president “stated that he is committed to NATO and his security team has also stated that very clearly,” Jens Stoltenberg, the organization’s secretary-general, said on CBS’ “Face the Nation.”

Trump rankled the NATO members during their summit in Brussels on May 25 when he lectured the leaders for not paying their fair share to bolster their defense and declined to endorse the treaty’s Article 5 that says that an attack on one is an attack on all.

In the organization’s 68 year history, it was been invoked only once – after Sept. 11, 2001.

But UN Ambassador Nikki Haley said Trump supports the mutual assistance pledge.

“Of course we believe in Article 5,” Haley told CNN’s “State of the Union.” “I just met with all of my NATO ambassadors yesterday. We said ‘a threat on one of us is a threat on all of us.’”

She said that despite Russia’s efforts to divide member nations, NATO will remain unified.

“NATO is going to continue to be strong. It’s going to continue to be united. Russia’s going to try and divide it, but the truth is we’ve never swayed from Article 5. We honestly still believe it,” she said.

Asked about Trump scolding NATO member leaders about not meeting their obligations to increase spending on their defense, Haley said the president was just reminding them of their need to support the organization.

“His intent was to make sure that the burden sharing was happening,” Haley added.