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Twelve Democrats including Biden, Warren and Sanders face off in largest presidential primary debate in US history

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Calling upon his long record as a senator and vice president, Joe Biden used his foreign policy answer to note he was the only candidate who has spent extensive time with Vladimir Putin.

Biden explained the threat Putin poses to America while gesturing to his right, where Bernie Sanders is standing. Sanders responded by joking that Biden was calling him Putin, prompting laughs from the candidates and the audience.

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With the exception of Tulsi Gabbard, the Democratic presidential candidates have been largely unified in their criticism of Trump’s decision to withdraw US troops from northern Syria.

Kamala Harris said Trump “sold out the Kurds,” and the decision demonstrated “why dude gotta go.”

Negotiators understood to have agreed in principle to customs border down Irish Sea

Boris Johnson appears to be on the brink of reaching a Brexit deal after making major concessions to EU demands over the Irish border.

A draft text of the agreement could now be published on Wednesday if Downing Street gives the final green light, according to senior EU and British sources.

Soldiers’ presence underlines Moscow’s role as power broker after evacuation of US personnel

Russian units have begun patrolling territory separating Turkish-backed Syrian rebels from the Syrian army around the flashpoint town of Manbij in north-east Syria, in a clear sign that Moscow has become the de facto power broker in the region after the evacuation of US troops.

Oleg Blokhin, a Russian journalist usually attached to mercenaries in Syria, posted a video on social media on Tuesday from a deserted US military base in the village of al-Saadiya, near Manbij.

Six adults removed from house and man, 58, arrested

A group described by local media as a man and his adult children have been found after spending several years living in the cellar of remote farmhouse in the north-eastern Dutch province of Drenthe “waiting for the end of time”.

The group of six were discovered after the oldest son, 25, visited a local bar, the Kastelein cafe. On the first occasion, 10 days ago, he “ordered and drank five beers on his own”, the owner, Chris Westerbeek, told broadcaster RTV Drenthe. When the man reappeared last Sunday, he “looked confused”, Westerbeek said. “He was unkempt, with long tangled hair. We got talking. He said he had run away and needed help, and that he had never been to school. Then we called the police.”

• State department official George Kent testifies in private
• Hunter Biden admits ‘poor judgment’ but denies wrongdoing
• US politics – live coverage

Democrats continued their whirlwind investigation of Donald Trump on Tuesday as another witness testified before Congress, building momentum towards a likely impeachment of the president.

Related: National Enquirer shredded Trump documents, Ronan Farrow book claims

Shinzo Abe says pair should have had access to shelter in Tokyo during Typhoon Hagibis

The Japanese prime minister, Shinzo Abe, has promised to take action after two homeless men were refused access to a shelter as Typhoon Hagibis barrelled into Tokyo.

The powerful storm hit Japan’s main island on Saturday with strong winds and heavy rainfall that caused more than 200 rivers to overflow, leaving thousands of homes flooded, damaged or without power.

Police and protesters clash in city centre, as well as other Catalonia towns

Clashes between protesters and police erupted in Barcelona late on Tuesday after peaceful demonstrations over the jailing of nine Catalan separatist leaders descended into running battles.

Protesters lit fires and erected makeshift barricades in the centre of the city before the crowd was dispersed by baton charges by Spanish and Catalan police, as far as Passeig de Gràcia, the elegant boulevard that is home to many of the city’s most exclusive shops and hotels.

• NBA star said freedom of speech can carry ‘a lot of negative’
• Relationship between NBA and China is under strain

Protestors in Hong Kong have burned LeBron James jerseys after the NBA star said that freedom of speech can lead to “a lot of negative”.

James made his comments after the fallout between the NBA and China over the anti-government protests in Hong Kong. The lucrative relationship between the league and China has been damaged since the Houston Rockets general manager, Daryl Morey, tweeted in support of the protestors earlier this month. Morey subsequently deleted the tweet but China has threatened to cut ties with the NBA, and some Chinese companies have backed out of broadcasts and sponsorship deals.

Farrow’s book Catch and Kill describes Harvey Weinstein’s efforts to silence alleged victims and put Farrow himself off the story

The combination of rage, threats, professional promises and vulnerability that Harvey Weinstein used to secure the silence of women he allegedly sexually attacked is described in a newly disclosed interview between one of his accusers and Ronan Farrow, the journalist who exposed the Hollywood mogul.

In his new book Catch and Kill chronicling his investigation into Weinstein, Farrow relates for the first time details of his conversation with a longtime former employee of the movie producer, Alexandra Canosa.

Former social media recluse’s Friends selfie attracts 116,000 followers in an hour

Jennifer Aniston’s new Instagram page is “on a break” after crashing hours after the star signed up for the platform.

The former Friends actor, one of social media’s most famous recluses, officially made her debut on Tuesday, causing the platform to temporarily crash as fans flocked to follow her account.

Channel 4 programme will follow meat-eaters as they adopt a farm animal that they must cook unless they go vegetarian

It is one of the most shocking ultimatums delivered on television. Go vegetarian or we kill your pet.

But a new British reality TV show called Meat the Family goes even further. Not only will a family of unrepentant carnivores have to let an animal they have adopted and grown to love go for slaughter if they refuse to stop eating meat – they will be asked to cook and eat it.

Green growth and ‘hedonistic sustainability’ have helped keep the public on board as the Danish capital seeks to reach its goal by 2025 – and so far it’s all going according to plan

“We call it hedonistic sustainability,” says Jacob Simonsen of the decision to put an artificial ski slope on the roof of the £485m Amager Resource Centre (Arc), Copenhagen’s cutting-edge new waste-to-energy power plant. “It’s not just good for the environment, it’s good for life.”

Skiing is just one of the activities that Simonsen, Arc’s chief executive, and Bjarke Ingels, its lead architect, hope will enhance the latest jewel in Copenhagen’s sustainability crown. The incinerator building also incorporates hiking and running trails, a street fitness gym and the world’s highest outdoor climbing wall, an 85-metre “natural mountain” complete with overhangs that rises the full height of the main structure.

‘If cities are invited to be at the table, I believe they will help accelerate the work that needs to be done’ said LA mayor Eric Garcetti

US mayors are seeking to go over President Trump’s head and negotiate directly at next month’s UN climate change conference in Santiago, they said as they met in Copenhagen for the C40 World Mayors Summit.

Los Angeles mayor Eric Garcetti, who rallied US mayors to commit to the Paris climate agreement after Trump announced his intention to withdraw the country in 2017, said he would ask the UN secretary general, AntĂłnio Guterres, on Thursday to give American cities a new role in UN climate talks.

“I’m going to bring it up with the UN secretary general,” Garcetti said. “If cities are invited to be at the table, I believe they will help accelerate the work that needs to be done. Hopefully, we can do it in concert with our national governments, but [we can do it] even where there is conflict.”

Garcetti, who was announced on Wednesday as the next chair of the C40 group of global cities, said he would use his position to seek “a more formal role in the deliberations” at the conference.

“The United Nations works directly with cities all the time ... so they shouldn’t feel feel scared about jumping down to that local level,” he said.

It is cities, not national governments, that are most aggressively fighting the climate crisis – and in 30 years they could look radically different

She has barely ever been in a car, and never eaten meat or flown. Now 31, she lives on the 15th floor of a city centre tower from where she can just see the ocean 500 yards away on one side and the suburbs and informal settlements sprawling as far as the eye can see on the other.

Life is OK in this megacity. She earns the exact median income and is as green as she feels she can be: she has no children yet, her carbon footprint is negligible, and her apartment, built in the early 2000s, has been retrofitted for climate change with deep insulation, its own solar air-con and heating systems.

As developers aim to turn France’s busiest train station into a gargantuan airport-style mall, Parisians fear for the local neighbourhood – and the station’s soul

“When you tell people in Paris you live near the Gare du Nord, they usually grimace,” sighed Sarah, a French academic in her 50s who has lived on a narrow, traffic-choked street next to Europe’s busiest station for 30 years.

“Architecturally, the station building is superb. But neighbourhoods around stations are never easy, wherever they are in the world.”

Ambush the latest in string of brazen attacks by Mexico’s drug cartels, as President Amlo defends strategy to halt the violence

With an AR-15 assault rifle in his hand and six spare magazines across his chest, the burly policemen looked nothing if not intimidating as he prepared to attend a memorial service for 13 fellow officers who were killed in an ambush in western Mexico on Monday.

Inside, he didn’t feel so tough.

Business and city leaders warn of economic damage of cancellation and call for 2012 Olympics-style authority

A review of HS2 by northern business and city leaders has called for control of construction of the high-speed railway to be devolved to the north and Midlands – and warned that its possible cancellation would leave no viable alternatives for transforming their economies.

The Northern Powerhouse Independent Review (NPIR), established to inform or pre-empt the government’s own review of HS2, recommended a new body, HS2 North, be established to integrate HS2 with proposed Northern Powerhouse Rail links.

• Charges laid in regards to racist chanting during England win
• Prime Minister describes events in Sofia as ‘stain on football’

Boris Johnson has joined demands by anti-racism campaigners for Uefa to take strong action after the racist chanting that marred England’s Euro 2020 qualifier against Bulgaria on Monday night.

European football’s governing body has opened disciplinary proceedings against the Bulgarian Football Union (BFU) for racist behaviour of its supporters after the incidents at the Vasil Levski Stadium in Sofia, in which some home fans made monkey noises at Tyrone Mings, Raheem Sterling and Marcus Rashford in the 6-0 victory for Gareth Southgate’s side.

Bipartisan bill would force Turkish president to halt military campaign amid reports of widespread human rights abuses

The US Congress will press ahead with a broad package of sanctions on Turkey, including cutting military support, after measures announced by the Trump administration were dismissed as ineffective, Senate officials have confirmed.

The Republican senator Lindsey Graham and Democrat Chris van Hollen are expected to launch a bipartisan bill on Tuesday aimed at forcing the Turkish president, Recep Tayyip Erdoğan, to halt his military campaign in north-eastern Turkey, amid reports of widespread human rights abuses and the release of Isis militants who had been detained there.

Parliamentarians seek to resubmit bill to introduce capital sentences for gay sex

MPs in Uganda are to push for new laws to make homosexual acts punishable by death.

James Nsaba Buturo, an MP, said parliamentarians wanted to retable a bill ruled unconstitutional by a court in 2014 that would introduce capital sentences for gay sex.

Labor says home affairs minister’s veto shows claims before election were false; Frydenberg responds to IMF growth forecast; and Malcolm Turnbull defends Snowy 2.0 after report savages project. All the day’s events, live

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Nova Peris unveils her official portrait with artist Dr Jandamarra Cadd in the members hall of Parliament House @AmyRemeikis @murpharoo @GuardianAus #PoliticsLive https://t.co/Omu0wVA3Co pic.twitter.com/TdXWvhq0gm

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Excellent and very well-deserved news.

Eryk Bagshaw works for the Sydney Morning Herald and the Age. He’s off to be their China correspondent very soon.

.@ErykBagshaw awarded the Wallace Brown young journo of the year award. Extremely well deserved.

Unicef report finds poorest children at greatest risk, while price of healthy food in rich nations drives food poverty

At least one in three children under five are either undernourished or overweight, and one in two lack essential vitamins and nutrients, the UN children’s agency has warned.

The Unicef report laid bare the alarming rate at which poor diets and a “failing” food system are damaging children, saying that “millions are eating too little of what they need and millions are eating too much of what they don’t need: poor diets are now the main risk factor for the global burden of disease”.

A third of workers in study experienced dangerously high body temperatures, despite working ban during hottest periods

Migrant labourers working outdoors in Qatar face “high” or “extreme” risk of heat stress for more than half the working day during the four hottest months of the year, according to a UN report.

The findings come just weeks after the Guardian revealed that hundreds of workers may be dying due to exposure to Qatar’s intense summer heat.

Global hunger index finds countries affected by drought and conflict in sub-Saharan Africa have seen biggest increases in undernourished people

The climate crisis is driving alarming levels of hunger in the world, undermining food security in the world’s most vulnerable regions, according to this year’s global hunger index.

The annual report, a ranking of 117 countries measuring hunger rates and trends, shows progress since 2000 but warns that the world still has a long way to go to reach the zero hunger target agreed by world leaders by 2030.

Children taken to safety in Raqqa after hundreds of people fled camp holding Islamic State affiliates in northern Syria

Three orphans believed to be British citizens have been evacuated from an area in northern Syria that was the focus of recent attacks by Turkish troops and their allies.

The Guardian understands that the three children, Amira, 10, her sister, Hiba, eight, and their brother, Hamza, were evacuated from a camp for people associated with Islamic State in Ain Issa on Sunday. They were part of a group of 24 children taken to safety by the UN refugee organisation.

Exclusive: Upmarket brand, which has just launched UN partnership, opens investigation as female labourers in Bangladesh factory say they suffer regular abuse

Lululemon, an athleisure brand whose ÂŁ88 leggings are worn by celebrities and Instagram influencers, are sourcing clothing from a factory where Bangladeshi female factory workers claim they are beaten and physically assaulted.

The Canadian brand recently launched a partnership with the United Nations to reduce stress levels and promote the mental health of aid workers.

Twelve Democratic 2020 presidential candidates will share the stage in the perpetual swing state on Tuesday

The Democratic 2020 presidential candidates will gather once again on Tuesday night to face off in their fourth debate, this time in the perpetual swing state of Ohio.

Twelve of the candidates have qualified to participate, and they will all share one stage – marking the most crowded debate stage of this election cycle so far. But the dynamics of the race have changed since the candidates last met in September, and some of the contenders face the prospect of this being their last debate.

UK lawyers say more women are coming forward, but are police and prosecutors ready?

The clearest impact of the #MeToo movement on the British justice system has been a sharp rise in the number of complaints made to police of rape and sexual assault over the past two years.

That surge, however, has coincided with a chaotic response by police and prosecutors, who have been engulfed in problems over disclosure and allegations they have refined their approach to the crime in order to improve conviction rates, although this has been denied by the Crown Prosecution Service.

Analysts say tactic of cooperation against nationalist parties appears to be working

A narrower-than-expected win for Poland’s ruling Law and Justice party (PiS) and a serious setback for Hungary’s governing Fidesz show eastern Europe’s illiberal nationalist parties are not entirely invincible, analysts and commentators have said.

“It looks like this may be a small step in the right direction – but it’s clear the opposition still has an awful lot of work to do,” said Agata Gostyńska-Jakubowska, a senior research fellow at the Centre for European Reform.

A close ally is abandoned, and Isis is regrouping. The speed of the unravelling is breathtaking

In the week since Donald Trump’s fateful phone conversation with Recep Tayyip Erdoğan, the US has entirely abandoned the Kurds, its most effective allies in the Middle East, and with them a Syria strategy that was five years in the making.

The Islamic State flag has been raised once more and the last vestige of US credibility as a reliable partner lies crushed under Turkish tank tracks. It has arguably been the worst seven days for US foreign policy since the invasion of Iraq.

Paul 'Jock' Palfreeman, who served 11 years in prison for fatally stabbing a Bulgarian student, has been released from immigration detention in the capital, Sofia, nearly a month after being granted parole. Speaking to journalists as he left the detention centre, Palfreeman voiced a desire to stay in Bulgaria if possible. 'Many people probably think, that I have had protection from Australia for the last 12 years, but the truth is, that the people who have helped me were Bulgarians and I trust them'

Residents of Drenthe, a province in the north-east Netherlands, reacted to the discovery of a group of people believed to have spent years living in the cellar of a remote farmhouse 'waiting for the end of time'. 

Six adults were removed and being taken care of, police confirmed, while a 58-year-old-man who was renting the farmhouse was arrested after refusing to cooperate with their inquiry. 

Native American tribes from up and down the west coast came together in San Francisco Bay to celebrate Indigenous Peoples’ Day on 14 October. Starting at dawn people paddled traditional tribal canoes around Alcatraz Island – the famous former prison site which was occupied by Native Americans from 1969-71. This year marks the 50th anniversary of the historic act of resistance that launched the modern era of indigenous rights

Protesters took to the streets of Barcelona and other parts of Spain after the supreme court jailed nine Catalan separatist leaders for sedition over their role in a failed independence bid in 2017. Three main streets in Barcelona were blocked, as was train and metro access to Barcelona airport

• Catalan separatist leaders given lengthy prison sentences 

Residents and survivors were picked up in central and eastern Japan after Typhoon Hagibis hit the country on Saturday 12 October. The super-typhoon has already claimed 40 lives.

Record rainfall caused at least 25 rivers across the country to burst their banks leaving people stranded. By Monday at least 16 people were still missing and 200 were confirmed injured

• Typhoon Hagibis: 110,000 join rescue effort as survivors tell of 'incredible' storm
• Typhoon Hagibis: death toll rises in Japan as ‘worst storm in 60 years’ roars through

Japan’s Typhoon Hagibis made landfall south of Tokyo on Saturday evening with heavy rain, which flooded the city and surrounding areas. The death toll has reached 36 and many people are still missing. Emergency workers swung into action, with helicopters plucking people from flooded buildings and police swimming through waters looking for missing people

Rescue efforts have begun in Japan following Typhoon Hagibis, which flooded Tokyo and surrounding areas and left at least 25 dead and 15 missing. 

Hagibis, one of the strongest storms to hit Japan in decades, made landfall south of Tokyo on Saturday evening and moved northward. It brought torrential rain and ferocious winds, causing widespread damage

• Typhoon Hagibis: recovery and rescue in full swing after deadly storm