The warning came on the fourth day of the conflict, when the Israeli military claimed it had achieved air superiority over the Iranian capital and could fly over the city without facing major threats.

Four days into their war with Iran, Israelis are shaken and anxious, yet remain resilient, still backing Prime Minister Benjamin Netanyahu's decision to confront a longstanding foe.

Iran unleashed a barrage of missile strikes on Israeli cities early Monday, after Israel struck military targets deep inside Iran, with both sides threatening further devastation. AFP images showed gutted residential buildings in Tel Aviv and fires smouldering outside the coastal city of Haifa,