Iran's use of cluster munitions is challenging Israel's air defenses, with small bombs, each carrying up to 11 pounds of explosives, being released from the head of the missile before falling over a wide area. Most of Iran's ballistic missiles carry about 24 bomblets, but one weapon - the Khorramshahr – can be equipped with up to 80. A CNN analysis revealed multiple impacts spread out across an area of seven and eight miles, falling at random on homes, businesses, roads and parks. The use of these cluster munitions against populated areas is prohibited under international humanitarian law. Amnesty International has previously accused Iran of a "flagrant violation of international humanitarianlaw". Israel has acknowledged using cluster munitions in the past but claims it does so in accordance with international law. The Iranian government has not responded to CNN's request for comment.