(FOX NEWS) — French President Emmanuel Macron defended NATO’s role Thursday, saying allies must stand by their commitments — a pointed response to President Donald Trump’s repeated criticism of the alliance.

Macron made the comments while responding to a reporter’s question about the possibility of the United States pulling out of the alliance, something Trump has said he is considering.

“When you have committed to an alliance, you live up to those commitments. You do not comment on them every morning. And the day there is a problem, you are there,” Macron told reporters Thursday in Seoul, South Korea.

Macron also said the U.S. cannot expect support for the Iran war because “this is not our operation.”

“They can hardly complain afterward that they are not being supported in an operation they chose to undertake alone. This is not our operation,” Macron said. “What we want is for peace to be restored as quickly as possible.”