Fears mount for safety of Ukraine’s nuclear reactors amid Russian invasion

Core meltdowns due to operational challenges cause concern even as direct strikes to facilities remain remote possibility

Concerns are mounting about the safety of Ukraine's 15 nuclear reactors and the possibility of an ecological disaster in the midst of the Russian invasion.

Experts said that those reactors, at four power plants around the country, had layers of safeguards to prevent a catastrophic meltdown of their cores, but in a full scale war of the kind Vladimir Putin has unleashed, there was a heightened risk of those safety layers all failing at once.