Organizers say climate campaigner Greta Thunberg and other 11 activists set sail on Sunday afternoon for Gaza on a ship aimed at “breaking Israel’s siege” of the devastated territory.

At least 31 people have died at one of the aid distribution sites in attacks attributed to Israel. The army denies shooting civilians, while the Red Cross reports dozens of people admitted with gunsho

The Palestinians were shot and scores wounded as huge crowds assembled to try and get food from a new aid distribution center. An Israeli military official said soldiers fired warning shots.

ABC News takes a look at key dates and developments of Israel's actions in Gaza and the worsening humanitarian crisis since the temporary ceasefire with Hamas ended.

Hijazi described what he called 15 minutes of terror Thursday at the center run by the Gaza Humanitarian Foundation, the private contractor that Israel says will replace the U.N. in feeding Gaza’s more than 2 million people.

The situation in Gaza is the worst since the war between Israel and Hamas militants began 19-months ago, the United Nations said on Friday, despite a resumption of limited aid deliveries in the Palestinian enclave where famine looms.

The proposal includes a 60-day ceasefire between Israel and Hamas in exchange for the release of some hostages in Gaza, Israeli officials said.

Boulder, Colo. — A man with a makeshift flamethrower yelled “Free Palestine” and hurled an incendiary device into a group that had assembled to raise attention for Israeli hostages in Gaza, law enforcement officials said Sunday. Eight people were injured, some with burns.