How Ukraine defends Kupiansk from Russian troops crawling through pipes

KHARKIV OBLAST — The longest a Russian soldier can hope to survive for after emerging from the underground pipeline is, according to those hunting them, one single hour. "But it's usually 10 minutes, and that's it," "Tovsty," chief sergeant of a company in Ukraine's Khartiia Brigade, says at a command post in northeastern Kharkiv Oblast. Tovsty is watching live drone footage showing a scene which has been repeating itself over and over again for months now — Russian soldiers emerging from disu

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