World leaders congratulate Lula after Brazil election win

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Luiz Inácio Lula da Silva has said he will govern for all Brazilians after an emphatic victory in the presidential election. But his defeated rival Flávio Bolsonaro has refused to accept the result. One of the world's most famous shopping areas is going traffic-free from today with the pedestrianisation of almost a kilometre of London's Oxford Street. We get reaction from shoppers there. How are AI models changing maths, including teaching, research and mathematicians’ careers? We speak to a mathematician and a PhD maths student. And we look at what's at stake in Tuesday's vote in Israel. Presenter: Rahul Tandon. (Photo: Brazilian President Luiz Inacio Lula da Silva, the Workers' Party (PT) candidate for re-election, gives a thumbs up as he addresses supporters after winning the presidential runoff election, in Sao Paulo, Brazil, October 25, 2026. Credit: Alexandre Meneghini/Reuters)