The families allege that men with links to the Saudi government helped those who carried out the 2001 attacks, something the country denies.
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Watch: The extreme motorsport where women keep winning
Swedish driver Susanne Callin has won the European Top Fuel championship for the second year in a row. Is drag racing the first gender-equal sport?
Inside the £1-an-hour official football shirt factories
A BBC Sport investigation traces official football shirt production to factories in Cambodia where workers are paid less than £1 an hour.
Margaret Hamilton, whose software helped land Apollo 11 on the Moon, dies at 90
Pioneering computer scientist led the development of the software for Nasa's Apollo mission and was awarded the Presidential Medal of Freedom.
'Every day there is killing': Gazans face Israeli strikes despite ceasefire as peace deal stalls
Many Palestinians are still living in cramped tent cities, with the US plan to end the war largely stalled.
Syrian general accused of atrocities paid and protected by US and Lebanon, BBC finds
Bassam al-Hassan, linked to reporter Austin Tice's abduction, is being sheltered in return for information.
UK bluefin tuna comeback shows nature can recover, says WWF
The tuna is one of several wildlife recoveries highlighted in a major new report from WWF.
Burnham to hold security talks with German chancellor in Berlin
Downing Street said deeper co-operation in the face of rising hybrid threats from Russia would be high on the agenda during Burnham's first official visit to Germany.
'Come all the way' back to EU, French finance minister tells UK
Roland Lescure tells the BBC that being in the bloc enables members to better address the challenges facing the world.
The Papers: 'Kemi's family home pledge' and 'Badenoch invokes core Tory values'
Conservative party leader Kemi Badenoch's speech at the Tory conference dominates Thursday's papers.
France's school protests: What lies behind the anger
Students' blockades and marches spring from real grievances – and from France's habit of settling policy on the street.
Three people killed in Houthi attacks on Saudi Arabia airports, officials say
The Houthis have claimed responsibility for the attacks, which mark an escalation in the conflict.
Trump wants a new Camp David-like retreat at his Florida golf club
Trump's estate would stand in stark contrast to the rustic Camp David and mark another tradition transformed by Trump.
AI chip boom pushes Samsung profits to record $80bn
The tech giant is also expected to get a boost from its latest folding devices that were launched in August.
AI chip boom pushes Samsung profits to record $80bn
The tech giant is also expected to get a boost from its latest folding devices that were launched in August.
Japan beer giants raided over alleged price-fixing cartel
Asahi, Sapporo, Kirin and Suntory confirmed to the BBC that their premises had been searched by the Japanese competition authority.
Spanish pensioner whose eviction sparked nationwide protests dies, union says
Maricarmen Abascal, 87, was forcibly removed on a stretcher from her apartment of more than 70 years in September.
She made India fall in love with women's cricket - now her era as captain is over
The skipper who led India to the historic 2025 World Cup win has stepped down from her role in all three formats.
New York court hears arguments in ongoing 9/11 families' lawsuit against Saudi Arabia
The families allege that men with links to the Saudi government helped those who carried out the 2001 attacks, something the country denies.
We spent thousands on a Tui river cruise but ended up on coach trips
Passengers have described their anger after their itineraries changed to involve hours spent on coach trips instead.
Hedgehog among four animals chosen to feature on new banknotes
The decision comes after nearly half a million people voted on a shortlist of 18 creatures.