A U.N. investigation concluded on Wednesday that Israel has committed crimes against humanity during the war in Gaza, including that of "extermination", while saying Israeli and Palestinian armed groups have both committed war crimes.

The independent Commission of Inquiry's report is the United Nations' first in-depth investigation into the events of the war that erupted on October 7.

Hamas said Tuesday that it gave mediators its reply to the U.S.-backed proposal for a cease-fire in Gaza, seeking some "amendments" on the deal. It appeared the reply was short of an outright acceptance that the United States has been pushing for but kept negotiations alive over an elusive halt to the eight-month war.

The foreign ministries of Qatar and Egypt — who have been key mediators alongside the United States — confirmed that they had received Hamas' response and said mediators were studying it.

The resignation of a senior member of Israel's war Cabinet was a dramatic show of distrust in Prime Minister Benjamin Netanyahu and his strategy for the eight-month-old war with Hamas.

But the departure of Benny Gantz does not immediately appear to threaten Netanyahu, who still controls a majority coalition in parliament.

Hamas says one of its commanders in the occupied West Bank was killed in a clash with Israeli forces.

In a statement released late Monday, Hamas said Mohammed Jaber Abdo was killed along with three other fighters in a village near Ramallah, where the Western-backed Palestinian Authority is headquartered. It said Abdo had spent 20 years in Israeli prisons.

U.S. Secretary of State Antony Blinken said Tuesday that the U.N. Security Council's vote in favor of a U.S.-backed proposal for a Gaza cease-fire and hostage release made it "as clear as it possibly could be" that the world supports the plan, as he again called on Hamas to accept it.

"Everyone's vote is in, except for one vote, and that's Hamas," Blinken told reporters in Tel Aviv after meeting with Israeli officials. He said Prime Minister Benjamin Netanyahu had reaffirmed his commitment to the proposal when they met late Monday.

Yemen's Houthi rebels said they had arrested members of an "American-Israeli spy network" days after detaining at least 11 U.N. staffers along with others from aid organizations.

Maj. Gen. Abdulhakim al-Khayewani, head of the Houthis' intelligence agency, announced the arrests, saying the spy network had first operated out of the U.S. Embassy in Sanaa. Then after it was closed in 2015 following the Houthi takeover of the capital Sanaa and northern Yemen, they continued "their subversive agenda under the cover of international and UN organizations," he said.

The Israeli military said on Tuesday that four soldiers had been killed in fighting in southern Gaza the previous day, more than eight months into its war against Hamas militants.

The soldiers were "killed in fighting in south Gaza" on Monday, the military said in a statement, without elaborating on the circumstances of their deaths.

The United Nations Security Council has adopted a U.S.-drafted resolution supporting a ceasefire plan in Gaza, as Washington leads an intense diplomatic campaign to push Hamas to accept the proposal.

The text -- passed with 14 votes in favor and Russia abstaining -- "welcomes" the truce and hostage release proposal announced on May 31 by President Joe Biden, and urges "parties to fully implement its terms without delay and without condition."

U.S. Secretary of State Antony Blinken urged top Israeli officials on Monday to accept and implement a plan for postwar Gaza as he pushed for more international pressure on Hamas to agree to a cease-fire proposal newly endorsed by the U.N. Security Council.

On his latest urgent mission to the Middle East — his eighth since the Israel-Hamas war began in October — Blinken met with Israeli Prime Minister Benjamin Netanyahu and Defense Minister Yoav Gallant after talks in Cairo with Egyptian President Abdel Fattah al-Sisi to push the proposal, which faces new uncertainty following Israel's hostage rescue operation that killed many Palestinians and turmoil in Netanyahu's government.

Missile attacks by Yemen's Houthi rebels struck two ships in the Gulf of Aden, authorities said Sunday, the latest assaults on shipping in the region.

One anti-ship ballistic cruise missile hit the Antigua- and Barbuda-flagged cargo ship Norderney forward station late Saturday, starting a fire that those on board put out, the U.S. military's Central Command said. It added that a second anti-ship cruise missile also hit the Norderney.