Israeli fighter jets have been seen armed with inexpensive glide bombs. Air superiority means it doesn't need to expend costly stand-off missiles.

Israel and Iran have begun a new round of attacks, as the conflict between the two heavily armed rivals enters its fourth day.

Israel expanded its attacks on Iran on Monday, striking the headquarters of state television after ordering residents to leave part of Tehran, as the fiercest and deadliest confrontation in the history of the Israeli-Iranian conflict entered its fourth day.