Nauru is the third smallest country in the world. It’s located in the middle of the South Pacific Ocean and is home to around 12-thousand people. The tiny island has recently received its first transfer of foreign detainees from Australia - following a controversial deal between the two nations. The deal was struck after Australia's top court ruled that it could not indefinitely detain about 358 people, the bulk of whom have been convicted of crimes, forcing their release into the community. The BBC’s Katy Watson is based in Sydney. She breaks down what we need to know about this deal, and what it says about Australia’s migration policy.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Chelsea Coates and Mora Morrison Editor: Verity Wilde

How does someone stop being a prince? The UK's King Charles has announced that his brother Andrew will no longer have this or any of his other titles after public pressure over his links with the convicted sex offender Jeffrey Epstein. He will also have to vacate his royal mansion in Windsor.

This is a rare move in royal history. In this episode we break down the main points and take a closer look at the people key to the story: the former prince; the King; Jeffrey Epstein and Virginia Giuffre, a victim of sex trafficking who alleged Andrew had sex with her three times as a teenager and whose memoir was recently published.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: Benita Barden and Maria Clara Montoya Editors: Verity Wilde and Harriet Oliver

Sumo is Japan’s national sport. Its origins go back more than 1,500 years, and it rarely leaves Japan. But some competitions are starting to tour - including The Grand Sumo Tournament, which recently happened in London. Wrestlers often start training from a very young age, and training is intense. It involves building strength and fitness - and eating. A lot. They consume around 10,000 calories a day.

The BBC’s Mariko Oi is from Japan. She talks us through all we need to know about the sport. We also hear from 21-year-old Aonishiki Arata. He’s one of Ukraine’s top wrestlers and now lives and trains in Japan. And two fans share why they love the sport.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: Mora Morrison and Natalia Makohon Editor: Verity Wilde

The White House, in the heart of Washington DC, has housed American presidents for more than two centuries. But now, the East Wing of the famous complex has been torn down by President Donald Trump.

He says he’s replacing it with a huge ballroom to host events. The administration hasn’t revealed plans for it just yet, but the latest estimated cost its around $300m.

So did President Trump have permission to partially demolish the building? What do people think about it? We speak to BBC reporter Sakshi Venkatraman, all the way from New York. She also explains how President Trump isn’t the only one who has made changes to the presidential residence over the years, but he’s already made a few since moving back in.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Chelsea Coates Producers: Imogen James and Emily Horler Editor: Verity Wilde

In August, China launched a new “K visa”, to attract young science and technology graduates. It came into effect on 1st October 2025 and although there isn’t a lot of information about what the visa will allow people to do, it’s getting a lot of media attention. Many people in China aren’t happy about it. That’s because millions of Chinese graduates can’t find jobs and there are worries over preferential treatment for foreigners.

Mengchen Zhang, from the BBC’s Global China Unit, joins Hannah in the studio to explain what we know about the K visa, why the Chinese government has introduced it and why it’s so hard right now for Chinese grads to find work. We also discuss Chinese work culture, including the new concept of 007.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producer : Julia Ross-Roy Video Journalist: Baldeep Chahal Editor: Verity Wilde

If you’re an NBA fan, you’ll probably know that this season has gotten off to a rocky start. The FBI has revealed two major cases of illegal sports betting, involving two NBA stars and a coach. The allegations include faking injuries to influence matches, as well as working with the mafia to rig poker games.

So, how did they allegedly get tangled up in the US organised crime world?

BBC reporter Kayla Epstein joins us from New York to explain what the FBI’s investigation has found - and how the mafia could be involved. And Jonty Colman, BBC Sport journalist, tells us about other illegal gambling controversies that have hit the NBA and how these allegations could impact the rest of the NBA season.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Chelsea Coates Producers: Benita Barden, Mora Morrison and Imogen James Editor: Verity Wilde

Antidepressants have been prescribed to help people with depression for decades. While they help millions, they also come with potential side effects. These can include nausea, a change in sleep patterns and low sex drive.

But now, for the first time, the side effects of different types of the drug have been compared and ranked in a study. What are the differences? And will it change how people are prescribed the drug? BBC Heath and science correspondent James Gallagher explains.

Do antidepressants have a different effect on younger people? We hear from BBC Newsbeat’s Eleanor Shearwood on a different study which has just begun, and is looking into this.

And three young people also tell us their experience of being on antidepressants, and how it has changed them.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: Imogen James and Emily Horler Editor: Julia Ross-Roy

The Catholic Church has appointed its first ever millennial saint — Carlo Acutis. A keen gamer and coder, the Italian teenager died aged only 15 back in 2006, days after being diagnosed with acute leukaemia. Since then, he’s earned the nickname ‘God’s influencer’ and developed a devoted following for the work he did to spread Catholic teaching during his short life.

Catholic followers believe he was behind two miracles and over a million people have travelled to Assisi to see his preserved remains. So, how does the process of becoming a saint work? And is Carlo’s canonisation part of a bigger push to get more young people interested in the Catholic Church?

BBC journalist Chelsea Coates explains all the steps towards becoming a saint. PopeCrave and a young Catholic tell us their thoughts about the Church’s first millennial saint.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Pria Rai Producers: Benita Barden, Maria Clara Montoya and Chelsea Coates Video Journalist: Imogen James Editor: Verity Wilde