Artillery and mortar craters pierce the ground next to a destroyed Russian tank, on October 23, 2022 in Kam'yanka, Kharkiv oblast, Ukraine. Ukraine's president Volodymyr Zelensky has accused Russia of launching a massive attack on his country's energy grid causing around 1.5 million households to be left without electricity. (Photo by Carl Court/Getty Images)
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Financial Times perspective: The nuclear threats that hang over the world
From the outset, Vladimir Putin has described the conflict as existential for Russia and hinted that he might use nuclear weapons to prevail.