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Inside Iran, what perhaps shocked people the most was the destruction of residential buildings, even more than the attacks on nuclear facilities and airbases, said BBC News Persian's Pouyan Kalani.
Many Iranians had not witnessed scenes like that since the end of the Iran-Iraq war - especially not on the streets of the capital.
Many of those in Tehran and elsewhere, recall the confusion of Friday: what exactly was happening; how widespread was it; and how could they protect themselves and their families?