The World Tonight

Police and politicians in Belfast have called for calm after violent protests took place across the city. It comes as a man has been charged with attempted murder over a knife attack on Monday night. Police described the alleged attacker as a Sudanese man, who the Home Office said entered the UK in 2023 and was granted refugee status. We hear more about the social and political context of tonight's unrest.
Also on the programme: we get reaction from the GMB Union to the Defence Secretary's pledge to buy British and find out why an American actor decided to learn Welsh to appear on the BBC's longest running TV soap.

The US president intervened after Iran and Israel launched missiles at each other. We speak to former American Ambassador to Israel, Thomas Nides.
Also in the programme: British Prime Minister Keir Starmer wants Apple and Google to install software on phones that will prevent children from taking or sharing explicit images – but does the technology exist to make that request a reality? And we ask researchers why a record numbers of octopuses have been spotted off the coast of England.

Dr Sanjoy Kumar’s daughter Grace was one of three people killed in the 2023 Nottingham stabbings. He tells Shaun Ley that the authorities have different questions to answer after the murder of Henry Nowak in Southampton last year.
Also in the programme: Canadian astronaut Chris Hadfield responds to news that crew on the International Space Station (ISS) were ordered to shelter in an attached spacecraft after the structure sprung a leak. And a new exhibition celebrates 50 years of the Undercroft Skate Space below London’s Southbank Centre.

Speaking on BBC Question Time, Greater Manchester Mayor Andy Burnham says he would join any challenge for the Labour leadership. He would need to win the Makerfield by-election later this month in order to launch an official leadership bid.
The Conservative leader Kemi Badenoch has told the BBC that conflict over identity politics could eventually lead to a civil war in the UK. We look at whether identity politics has contributed to a fracturing of British society.
Also in the programme:
Are elected Republicans becoming more comfortable challenging President Trump's decisions?
And how did the altar stone of Stonehenge make it from Scotland to Salisbury? Researchers think they finally have the answer.

The warning from the US Secretary of State comes as Ukraine strikes St Petersburg. We hear how the news is going down in Washington DC.
Also in the programme: after 18-year-old student Henry Nowak was handcuffed and arrested as he lay dying, we hear how police officers are trained. And Barack Obama’s presidential library in Chicago opens its doors to the public in a couple of weeks’ time, but is it any good?