Valerie Amos
Valerie AmosReuters

United Nations humanitarian chief Valerie Amos said Sunday on a visit to Iran that it will take months to repair damage to the UN's infrastructure caused by the Israeli airstrikes in Gaza.

"Damage to hospitals, schools and UNRWA shelters where people displaced sought refuge will take months to rebuild," she was quoted by AFP as having said.

Amos was speaking to reporters at the start of a two-day visit for talks with Iranian officials on the humanitarian crises wreaked by conflicts in Gaza, Syria and Iraq.

"The UN response continues including deliveries of food, water and households goods. Medicines and fuel are being delivered to hospitals," she added.

A total of 97 UNRWA installations, including health and food distribution centers as well as schools, have been damaged in the war since July 8 between Israel and the Hamas movement which controls Gaza.

Amos noted the United Nations had made "strong statements" about "the violation of international humanitarian laws and human rights laws by all parties in Gaza."

Throughout the fighting in Gaza, Israel was condemned and blamed several times for shelling UNRWA schools being used as shelters in Gaza.

Following one of those incidents, multiple IDF sources later rejected UNRWA’s claims and characterized them as outright falsehoods.

Israel has provided video evidence that Hamas fires rockets from inside schools.

The UN’s Human Rights Council (UNHRC) last week appointed a three-member panel that will investigate allegations that Israel violated humanitarian law in Gaza during Operation Protective Edge.

That panel is headed by William Schabas, a Canadian law professor known for his anti-Israel stance.