French President Emmanuel Macron (L) welcomes Secretary-General of the North Atlantic Treaty Organization (NATO) Jens Stoltenberg prior to their meeting at the Elysee Palace in Paris, France, May 21, 2021. (Photos by Aurelien Morissard/Xinhua)

French President Emmanuel Macron attends a press conference with Secretary-General of North Atlantic Treaty Organization (NATO) Jens Stoltenberg (not in the picture) at the Elysee Palace in Paris, France, May 21, 2021.

French President Emmanuel Macron (R) and Secretary-General of the North Atlantic Treaty Organization (NATO) Jens Stoltenberg speak to media at the Elysee Palace in Paris, France, May 21, 2021.

French President Emmanuel Macron attends a press conference with Secretary-General of North Atlantic Treaty Organization (NATO) Jens Stoltenberg (not in the picture) at the Elysee Palace in Paris, France, May 21, 2021.

Secretary-General of the North Atlantic Treaty Organization (NATO) Jens Stoltenberg attends a press conference with French President President Emmanuel Macron (not in the picture) at the Elysee Palace in Paris, France, May 21, 2021.

French President Emmanuel Macron (R) and Secretary-General of the North Atlantic Treaty Organization (NATO) Jens Stoltenberg greet people prior to their meeting at the Elysee Palace in Paris, France, May 21, 2021.

French President Emmanuel Macron (R) and Secretary-General of the North Atlantic Treaty Organization (NATO) Jens Stoltenberg speak to media at the Elysee Palace in Paris, France, May 21, 2021.