Decision to reset the hands of the symbolic timepiece is taken each year by a security board and a board of sponsors, which includes 10 Nobel laureates

Europe's largest nuclear plant has been occupied by Russia since March; incident raises fears of catastrophe in country still haunted by Chernobyl disaster

Moscow blames Ukraine of shelling Russia-held Zaporizhzhia facility, Kyiv accuses Russia of storing weapons there; observers warn of grave health and environmental threats

Officials warn of 'very serious consequences' of fires; UN nuclear watchdog has not received live data from site since March 9, says concerned about lack of staff at facility

Ukrainian intel says false-flag operation to be carried out by Russian operatives, Belarusian specialists sent to facility after communications cut

Radiation countermeasures expert Dr. Alla Shapiro, a Chernobyl first responder, says war conditions make it harder to save lives in event of attack on nuclear power plant

While Ukrainian emergency services put out blaze, experts warn that attacks on reactor sites could release radioactive waste or damage cooling systems, triggering a meltdown

Zelensky says Russia only country to ever attack a nuclear plant, warns Putin's 'reckless' actions 'could now directly threaten the safety of all of Europe'; Calls for UN to meet

Officials say radiation levels normal, but plant spokesman warns accident can happen at any moment, with firefighters unable to reach flames