BUENOS AIRES, Argentina — Lionel Messi announced his retirement from international soccer on Monday after two decades representing Argentina.

“It was a decision that hurt — and still hurts deeply — but I understand that the time has come,” the 39-year-old Messi said on his Instagram account.

“I swear to you that I always gave it my all — not just in these last few years when we won everything, but before that too; I always fought and left everything on the field for this jersey, to bring you joy and make you feel proud to be Argentine through football.”

Messi played in a record-tying six World Cups, won it in 2022 in Qatar and led Argentina to this year’s final, losing to Spain in extra time in New Jersey.

In the World Cup hosted in the U.S., Mexico and Canada, Messi played all eight matches and scored eight goals. He finished just one goal behind France’s Kylian Mbappé, the tournament’s top scorer. He concluded his international career as Argentina’s all-time leading scorer with 125 goals, 21 of which were scored in World Cups.

He explained he wrote his retirement letter on July 21 — two days after the World Cup final — but waited to publish it because his father was facing health issues that eventually claimed his life.

Jorge Messi died on Aug. 8 in his native Rosario.

Messi will continue to play for Inter Miami. Over the weekend he scored four times in a 7-1 win over CF Montreal.

He made his Argentina debut in 2006 but his journey was fraught with frustration until he finally lifted the World Cup in 2022.

People sing happy birthday to Lionel Messi at a street mural of him in Buenos Aires, Argentina, June 24.

Rodrigo Abd/AP

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Rodrigo Abd/AP

“Thank you for all the love these past 20 years,” he said. “I’m going to miss hearing you all from the inside so much. Now I’m going to be one of you, cheering and supporting you from the outside (through thick and thin, even more so).”

In the letter, the Inter Miami captain did not say how long he intends to continue playing.