Chernobyl's race against time - for another 100 years

Forty years have passed since the fateful night when reactor 4 in Chernobyl exploded. But the cleanup work has barely begun. And a Russian drone attack last year is making the race against time much worse. The inner “sarcophagus” is in danger of collapsing. That must not happen, says expert Shaun Burnie on the phone from Kyiv.