United Nations data reveals 87% of aid trucks entering Gaza since May 19 were looted by armed groups or civilians, sparking debate over responsibility for humanitarian crisis.

Israel has given a tour of a large storage site within Gaza containing what it claims to be 1,000 lorries-worth of aid that the United Nations (UN) has failed to deliver.

Israel accuses Hamas of siphoning off aid — without providing evidence of widespread diversion — and blames U.N. agencies for failing to deliver food it has allowed in.