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Officials from the United Nations’ atomic-energy watchdog have this week begun inspections of southern Ukraine’s Zaporizhzhia Nuclear Power Station, where shelling and fighting have raised the risk of a nuclear accident. Russian troops have occupied the nuclear plant — Europe’s largest — since March as part of their ongoing war in Ukraine. The international community has issued stark warnings that damaging some of Zaporizhzhia’s six reactors could lead to catastrophic meltdowns like those that occurred in 2011 at the Fukushima Daiichi Nuclear Power Plant in Japan.