Alun Wyn Jones, the world's most capped rugby union player, has announced his retirement from the international game.
The 37-year-old lock played 158 times for Wales and made 12 British and Irish Lions Test appearances.
Wales flanker Justin Tipuric, who won 93 caps, had earlier announced his decision to step down from Test rugby.
The players' decisions come less than four months before Wales' World Cup opener against Fiji in Bordeaux, and both had recently been named in a 54-player preliminary training squad for the tournament by head coach Warren Gatland.
Writing on his Instagram page, Jones said: "Having been selected in this year's preliminary Rugby World Cup squad, and after ongoing dialogue with the coaching staff and WRU (Welsh Rugby Union), I have decided to step away from the international game.
"So, after 17 years, I look back on special memories with Welsh greats and future Welsh greats."
In a glittering Welsh career, which began in a 2006 Summer Test against Argentina, Jones won five Six Nations titles (2008, 2012, 2013, 2019, 2021), which included three Grand Slams in '08, '12 and '19.
Gatland said: "I would like to congratulate Al on a phenomenal international career.
"His leadership, dedication and determination are second to none, and he has been an incredibly special player for Wales over the past 17 years.
"Every single time he has taken to the training pitch or put on the red jersey in a Test match he has given his absolute all, setting standards and leading by example.
"I am very fortunate to have been able to have worked with him with Wales and with the Lions.
"Al's passion and commitment for his country are limitless, and he has been an important pillar for the game in Wales.
"He and his family can be immensely proud of all he has achieved and in knowing he leaves a lasting legacy in Welsh rugby."
Tipuric, 33, captained Wales in the autumn internationals late last year and has 93 caps since making his debut in 2011 plus one appearance for the British & Irish Lions.
He was expected to be a key figure for Gatland in France, though he has battled with injury in recent seasons, including missing the entire 2021-22 campaign.
"During the off season I've had time to reflect on my playing career and now seems the right time to step away from international rugby," Tipuric said in a statement.
"It's been a privilege to put on the Welsh jersey and have so many great memories.
"I'm looking forward to spending more time at home and putting all my energies into playing for my home region the Ospreys."
Tipuric was a central figure when Wales reached the semi-finals of the 2011 and 2019 World Cups.
His announcement on Friday comes a week before a 54-player extended Wales squad will meet up for a pre-World Cup training camp. He had been named in that selection by Gatland.
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