It’s an unprecedented situation in history – a nation with a major nuclear power program finding itself in the middle of a war. Ukraine is dependent on nuclear power and operates one of the world’s largest nuclear networks. It runs four power plants with a total of 15 reactors. As the frontline of the fighting edges closer to these sites, there are worries that one of them could get caught in the crossfire and spark a nuclear disaster. Shaun Burnie is a senior nuclear specialist with Greenpeace and explains how likely the chance is we might see a nuclear accident as a result of the war in Ukraine. Can anything be done to reduce the risk? When Russia invaded Ukraine, experts worried that cyber attackers would wreak havoc – but that hasn’t happened yet.Ukraine’s defense council says the number of cyber attacks has gone up significantly. But it’s less than expected. Internet giants like Microsoft have also helped repel attackers. Meanwhile, hackers around the world, including the Anonymous collective, have declared cyberwar on Russia.Dmitri Alperovitch is a computer security industry executive and co-founder of the cyber security company Crowd Strike. Should security analysts in western countries be preparing for a cyber attack? How?_00:00 Unprecedented: Ukraine’s major nuclear power program in the middle of war00:59 How likely is a nuclear accident as a result of war?05:44 Are cyber attacks next in Russia’s invasion of Ukraine?