The potential for a nuclear disaster in Ukraine is now so high, residents around a nuclear plant in the south-east of the country have been receiving iodine tablets to help protect them against cancer, if the worst occurs.

Inspectors from the International Atomic Energy Agency have rushed to Zaporizhzhia to assess the nuclear plant, that’s now under Russian control and has been under increasing attack.

Today, physicist Edwin Lyman on the very real threat of a radioactive meltdown, as Russia’s attempted invasion of Ukraine drags on.

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Dr Edwin Lyman, physicist and director of nuclear power safety at the Union of Concerned Scientists, Washington DC