From pollution to policing – can Sadiq Khan clean up London?

Today in Focus talks to three teenagers, and technology reporter Josh Taylor, about Australia’s world-first legislation: a social media ban for under-16s. Help support our independent journalism at theguardian.com/infocus

The battle to buy Warner Bros Discovery has captured Donald Trump’s attention. The US president has said he will be involved in the decision on the company’s sale as Netflix and Paramount fight to take over the entertainment company. Lucy Hough speaks to the Guardian US’s deputy business editor, Callum Jones – Watch on YouTube. Help support our independent journalism at theguardian.com/infocus

How far will tech firm Palantir go to ‘save the West’? With Michael Steinberger and Johana Bhuiyan. Help support our independent journalism at theguardian.com/infocus

Donald Trump has loomed large over Volodymyr Zelenskyy’s meeting with European leaders, after the US president took aim at the Ukrainian leader once again. It comes in the wake of a new White House national security strategy that has caused fear in Europe, but drawn praise from the Kremlin. Lucy Hough speaks to our Europe correspondent Jon Henley – Watch on YouTube. Help support our independent journalism at theguardian.com/infocus

Should we be worried about the vast amounts of money pouring into AI? And what will happen if the bubble bursts? Blake Montgomery reports. Help support our independent journalism at theguardian.com/infocus