Adding to OP's thread, here is The Independent's reporting of this story. Not mentioned is that Israel broke US law by using American weapons on civilian population. Were we to follow the LAW, we should cut off Israel from further arms sales.
Amnesty calls on US to suspend arms sales to Israel
Hellfire missiles and white phosphorus artillery shells among weapons used in 'indiscriminate' attacks on civilians, says human rights group
Rory McCarthy in Jerusalem
Monday 23 February 2009 09.14 GMT Amnesty researchers in Gaza found several weapon fragments after the fighting. One came from a 500lb (227kg) Mark-82 fin-guided bomb, which had markings indicating parts were made by the US company Raytheon. They also found fragments of US-made white phosphorus artillery shells, marked M825 A1.
On 15 January, several white phosphorus shells fired by the Israeli military hit the headquarters of the UN Relief and Works Agency in Gaza City, destroying medicine, food and aid. One fragment found at the scene had markings indicating it was made by the Pine Bluff Arsenal, based in Arkansas, in October 1991.
The human rights group said the Israeli military had used white phosphorus in densely populated civilian areas, which it said was an indiscriminate form of attack and a war crime. Its researchers found white phosphorus still burning in residential areas days after the ceasefire.
At the scene of an Israeli attack that killed three Palestinian paramedics and a boy in Gaza City on 4 January, Amnesty found fragments of an AGM114 Hellfire missile, made by Hellfire Systems of Orlando, a joint venture of Lockheed Martin and Boeing. The missile is often fired from Apache helicopters.
Amnesty said it also found evidence of a new type of missile, apparently fired from unmanned drones, which exploded into many pieces of shrapnel that were "tiny sharp-edged metal cubes, each between 2 and 4mm square in size".
"They appear designed to cause maximum injury," Amnesty said. Many civilians were killed by this weapon, including several children, it said.
http://www.guardian.co.uk/world/2009/feb/23/israel-arms-embargo-gaza