A series of commemorations are underway in Ukraine as the country marks the 25th anniversary of the Chernobyl nuclear disaster.
Russian President Dmitry Medvedev joined his Ukrainian counterpart Viktor Yanukovich to pay respects to those who laid down their lives to help protect others from the unseen dread of radiation.
Medvedev wants a new global agreement on nuclear security. He said: “The tragedy at Fukushima shows us that we must take extra steps to ensure that nuclear energy is safe and secure and works as it should do. That is why we need to unify and work towards new international standards that will include the whole planet.”
In 1986 Soviet authorities covered up the explosion for 48 hours as radiation, no respecter of frontiers, billowed across Europe.