Israel's ground assault on Gaza this month has killed more than 1000 Palestinians, mostly civilians and children.
Palestinian militants have also been condemned, for firing rockets and mortars into Israel.
Last week UN Secretary-General Ban-Ki Moon appeared in a joint press conference with Israeli Prime Minister Benjamin Netanyahu, to call for an immediate ceasefire.
We spoke to Professor Hilary Charlesworth, for her views on what international humanitarian law may have been breached, since the conflict began on 8 July.
Professor Hilary Charlesworth is the Director for the Centre for International Governance and Justice in RegNet. (Regulatory Institutions Network), ANU College of Asia and the Pacific