In just over two months, the offensive has wreaked more destruction than the razing of Syria’s Aleppo between 2012 and 2016, Ukraine’s Mariupol or, proportionally, the Allied bombing of Germany in World War II. It has killed more civilians than the US-led coalition did in its three-year campaign against the Islamic State group.

The Israeli military has said little about what kinds of bombs and artillery it is using in Gaza. But from blast fragments found on-site and analyses of strike footage, experts are confident that the vast majority of bombs dropped on the besieged enclave are US-made. They say the weapons include 2,000-pound (900-kilogram) “bunker-busters” that have killed hundreds in densely populated areas.