CAIRO (Reuters) -Israeli fire and airstrikes killed at least 25 Palestinians across Gaza on Sunday, local health authorities said, at least five of them near two aid sites operated by the U.S.-backed Gaza Humanitarian Foundation (GHF).

Medical facilities in the Gaza Strip are overwhelmed, staff are exhausted, and resources are virtually nonexistent.

Dozens also injured as Israeli forces open fire on Palestinians waiting to get aid in Gaza, according to reports - Anadolu Ajansı

Videos and images verified by NBC News piece together a picture of the deprivation and chaos of Gaza's hospitals.

The Global March to Gaza is a civilian-led initiative to march from Arish, Egypt, to the Rafah border crossing with the Gaza Strip beginning on Sunday. Once in Rafah, the goal was to set up a camp and work to break the Israeli blockade of Gaza, provide humanitarian aid to the strip and protest against Israel's actions in the territory.

Internet is back up in the war-battered Gaza Strip, the head of the Palestinian Telecommunications Regulatory Authority told AFP on Saturday, after a three-day blackout blamed on Israel's military."The network is up now in all of the Gaza Strip,

U.N. member nations have voted overwhelmingly to demand an immediate ceasefire in Gaza, the release of all hostages held by Hamas, and unrestricted access for the delivery of desperately needed food.

The rally in support of Palestine, organized on Saturday in Paris, reflected an atmosphere of anxiety after Israeli strikes on Iran.