Russia-Ukraine war: thousands of people without power after Russian strikes on energy hubs, says Ukraine – as it happened

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Environmental groups have installed radiation sensors across southern Ukraine to improve the quality of current readings and provide warnings in the event of a nuclear incident.

Greenpeace, which worked with Ukrainian group SaveDnipro to install the detectors, said they had been placed in the city of Zaporizhzhia, home to Europe's largest nuclear plant, as well as in Yuzhnoukrainsk, Odesa, Tarutyne, Yuzhne, and Uman.