The nuclear apocalypse is approaching: Iranian state television has begun showing instructions on how to survive in the event of a nuclear attack. Citizens were urged not to watch the flash of the explosion, take shelter in buildings, use bottled water, avoid windows and be prepared to spend at least 24 hours in shelters and wait for a message from the emergency services about the possibility of a safe exit. The warning came against the backdrop of Tucker Carlson's statements about a possible US nuclear attack on Iran.