Rune Larsen, warrant officer in the civil protection service, speaks on the telephone as he shows jornalists around one of Oslo's largest bomb shelter in Hanshaugen, Oslo's on May 18, 2026. War is now a possibility in Norway, by the prime minister's own admission. The country, which borders Russia, has gone into "total defence" mode, preparing its population for the worst in light of the war in Ukraine. Dug beneath a peaceful park, the St. Hanshaugen air raid shelter, one of Oslo's largest, can take in 1,100 people behind its heavy metal doors if ever the worst comes to pass. (Photo by Jonathan KLEIN / AFP)