Ukrainian President Volodymyr Zelensky is expected today in the Chernobyl exclusion zone to commemorate the victims of the worst nuclear accident in history.
Thirty-five years ago, an explosion at the Chernobyl reactor number 4 shook the world,
releasing tons of radioactive waste into the atmosphere.
Before Zelensky's arrival, dozens of people gathered in the abandoned city of Pripyat for a night vigil with candles in memory of those who lost their lives in the accident.