Kate Adie introduces stories from Nigeria, Ukraine, the United States, Sweden and France.

Nigeria's president, Bola Tinubu, has declared a nationwide security emergency amidst a spate of kidnappings in the country’s north. More than 250 children abducted from a Catholic school last week are still missing, according to authorities. Mayeni Jones reports from Minna, in Niger state.

Moscow, Abu Dhabi, Kyiv and Geneva have all hosted peace negotiations this week, but despite the distances travelled, is an end to the war in Ukraine any closer? BBC Ukraine correspondent James Waterhouse has been watching the latest efforts to end the war, as nightly assaults continue in many Ukrainian cities.

When Donald Trump returned to the White House in January, he was quick to repeal a range of policies introduced by the previous administration. Among them, a moratorium on Federal Executions. Hilary Andersson was recently selected as a media witness for an execution in Oklahoma.

The longest strike in the modern history of Sweden recently passed its second anniversary. It’s a simple argument: whether or not to recognize the right of the union to negotiate on behalf of its members. Tim Mansel meets the mechanics taking on one of the world's richest companies, Tesla.

And finally, we head to the Loire Valley in central France, where over centuries the steady flow of the Allier River has shaped the distinctive setting for a small village. While the ebb and flow of the river has long influenced life in the region, the effects of climate change mean its future is now less certain. Sara Wheeler reflects on its unusual evolution.

Series Producer: Serena Tarling