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500-Year-Old Tunnels Depicted In Leonardo Da Vinci’s Sketches Have Been Found Beneath An Italian Castle
After Ludovico il Moro took over as Duke of Milan in 1494, he had many artists come to Sforza Castle to decorate its rooms ...
As the border wall goes up, the underground threat will grow
John Spencer is chair of urban warfare studies at the Modern War Institute and a founding member of the International Working ...