The World Tonight

Israeli exit polls suggest Gadi Eisenkot's bloc has won the largest number of seats in the general election but has fallen short of a majority. Eisenkot leads the newly formed Yashar party and is the main figure in the "change bloc", a group of opposition parties with the shared goal of ousting Benjamin Netanyahu. We hear from one of the party's candidates.
Also on the programme: the United States says it has issued visas for Flavio Bolsonaro, who on Sunday lost Brazil's presidential election, and his family. Bolsonaro is reported to have fled his home country after being order to surrender his passport by Brazil's Supreme Court amid allegations of money laundering.
And we speak to a leader of the 'Effective Altruism' movement about how they're trying to take on the AI industry.

Israeli citizens living abroad are flying in to vote in the first elections since the October 7 attacks. Polls currently have Benjamin Netanyahu’s governing coalition and the opposition bloc level pegging, with neither predicted to pick up enough seats to win a majority.
Also on the programme: Anthropic prepares for the first public sale of its shares, with some predicting that the AI firm’s value could be as high as $2 trillion; and should we be buying farmed salmon? We look into the eye-catching campaign attacking the salmon industry.

The Israeli prime minister Benjamin Netanyahu has threatened a major offensive in the occupied West Bank after Palestinian gunmen killed two soldiers before being shot dead themselves.
Also on the programme: President Macron of France has condemned what he called a "racist terrorist attack" after a man opened fire in the western suburbs of Paris, killing one person and injuring four. And we hear from Peter Lantos who, 70 years ago today, was part of the Hungarian uprising.

The vulnerabilities were found within the PHP programming language by AI systems run by OpenAI. But could they just have easily been found by hackers? We ask the former head of the UK Government’s Office for Artificial Intelligence, Sana Khareghani.
Also in the programme: We explore the difficulties of accurately diagnosing multiple sclerosis (MS) after actress Christina Applegate says she was wrongly told she had the condition. And the new film by The Banshees of Inisherin director Martin McDonagh - Wild Horse Nine - stars John Malkovich as a 1970s CIA agent. But is it any good?

Governments and cyber-security agencies around the world are urging online companies to fix flaws in their programming language, or take down their websites. We speak to a technology expert who explains how worried we should be.
Also in the programme, a 74-year-old American man is released from a Russian penal colony. We hear from the lawyer for Stephen Hubbard.
And we take you to the rainforests of Cameroon, where a British music group have been recording the voices and instruments of the people who live in Baka.
(Photo: Hard disk drives at the computer server, as cyber agencies warn that websites may be taken offline while PHP prepares a critical fix, in Berlin, Germany, October 21, 2026. Credit: REUTERS)