Israel's military censor has already banned the publication of the identity of the unit leaders who fought Hamas in the Gaza Strip for fear they may face war crimes charges.
Amnesty International has said it is "undeniable" that Israel used white phosphorus in crowded civilian areas, contrary to international law, charging that this amounted to a war crime.
Accusing Israel of using excessive force, Ban Ki-moon, the UN secretary-general, has demanded that those responsible for bombing UN buildings in the Palestinian territory be made accountable.
UN schools and the main aid headquarters where tonnes of food was stocked were bombed.
Eight Israeli human rights groups have called on the Israeli government to investigate the scale of the casualties, describing the number of dead women and children as "terrifying".
Israel insists troops did their best to limit civilian casualties in a heavily-populated area and blamed Hamas for hiding behind civilians to fire rockets at southern Israel.
Gaza doctors put the Palestinian death toll at 1,330 with at least another 5,450 people wounded.
About 65 per cent of the dead were civilians, including 437 children.
Ten Israeli soldiers and three civilians died during Operation Cast Lead, which ended last Sunday with a ceasefire.