French President Emmanuel Macron is no fan of President Trump’s style of Twitter diplomacy.

“I always prefer having direct discussion or answering questions than making my diplomacy through tweets,” Macron said in an interview with CNN’s Fareed Zakaria, which aired Sunday.

Macron was asked about a tweet sent out by Trump as he landed in Paris to mark the 100th anniversary of the end of World War I on Friday night. Trump didn’t care for comments Macron made about Europe needing a “true European army” so that the continent can defend itself against threats without the United States.

“President Macron of France has just suggested that Europe build its own military in order to protect itself from the U.S., China and Russia,” Trump wrote. “Very insulting, but perhaps Europe should first pay its fair share of NATO, which the U.S. subsidizes greatly!”

Macron, who sat down with Zakaria Saturday night, said things were fine with the American president despite the tweet, saying he didn’t know if Trump’s Twitter missive was a mistake.

“We had a very good discussion this morning and he confirmed in front of the press that he was OK,” Macron said, adding that he preferred not to conduct diplomacy through social media.

Macron did point out similarities between himself and Trump, explaining that neither of them rose through the ranks as “classical politicians.”

He was able to work with Trump “probably because we are very much aligned in the fight against terrorism and we work very closely together following this line.”

“We know where we disagree and we are very straightforward on that – on climate, on trade, on multiculturalism – but we work very well together because we have very regular and director discussions,” Macron went on .

He suggested to Zakaria that the U.S. would eventually rejoin the Paris climate accord, which Trump pulled out of during his first six months of office.

And he said he knew that Trump was often under the obligation to deliver certain policies that he promised to his voters. “I think my responsibility is to try and optimize the situation under certain constraints,” the French president said.

On Sunday, however, Macron rebuked Trump’s nationalistic tendencies.

“Patriotism is the exact opposite of nationalism,” Macron said, speaking in French. “Nationalism is a betrayal of patriotism. By saying our interests first … we erase what a nation holds dearest, what gives it life, what gives it grace, and what is essential: its moral values.”