Mr Ban has requested more than $11m (£7m) compensation from Israel for damage to UN property in Gaza, after
a limited UN inquiry
accused Israel of targeting known civilian shelters and providing untrue statements to justify actions in which civilians were killed.
The report found Israel to blame in six out of nine incidents when death or injury were caused to people sheltering at UN property and UN buildings were damaged.
Meanwhile, a fact-finding team commissioned by the Arab League said there was sufficient evidence for the Israeli military to be prosecuted for war crimes and crimes against humanity, and that "the Israeli political leadership was also responsible for such crimes".
It also said Palestinian militants were guilty of war crimes in their use of indiscriminate attacks on civilians.
About 1,300 Palestinians died in the January conflict. Israeli and Palestinian estimates differ on the numbers of civilian casualties.
Ten Israeli soldiers were killed, including four by friendly fire, and three Israel civilians died in rocket attacks by Palestinian militants.
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