The UN's top court, the International Court of Justice (ICJ), has begun hearings for an opinion on whether Israel must co-operate with the UN's Palestinian refugee agency - Unrwa - after it severed ties with it last year after accusing it of colluding with Hamas.

A Palestinian diplomat has told the United Nations’ top court that Israel is killing and displacing civilians and targeting aid workers in Gaza in a “man-made catastrophe of unprecedented proportions.

U.N. and Palestinian representatives at the International Court of Justice accused Israel of breaking international law by refusing to let aid into Gaza, on the first day of hearings about Israel's obligations to facilitate aid deliveries.