The World Health Organization says Israel's ground offensive has compromised its efforts to continue working, after its facilities were attacked.

The head of a UN office in the Gaza Strip has described an aid distribution scheme run by a rival organization as a "sadistic death trap. " Philippe Lazzarini is the head of the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA),

Israel has refused to renew visas for the heads of at least three United Nations agencies in Gaza. The U.N. humanitarian chief blames it on their work trying to protect Palestinian civilians in the war-torn territory.

An Israeli military order for residents and displaced people in Gaza's Deir el-Balah area to move south dealt "another devastating blow" to humanitarian efforts in the war-ravaged territory, the UN's OCHA aid agency has said.

The head of the agency that helps oversee international aid deliveries to the territory has criticized the impact of Israeli policy on civilians.

Visas for the local leaders of the Office for the Coordination of Humanitarian Affairs, the human rights agency OHCHR and the agency supporting Palestinians in Gaza, UNRWA, have not been renewed in recent months.

Two UN agencies talk about the obstacles ... Armed gangs are also stealing the aid that is trickling in. NPR correspondent Aya Batrawy spoke with two U.N. agencies tasked with aiding people in Gaza.

UN's head of humanitarian affairs claims move, affecting UNRWA and others, aims to thwart efforts to protect Palestinian civilians; Israel says looking into issue, slams UN bias