Israeli Defense Forces and the Shin Bet said they killed the head of the Shura Council of Hamas, Osama al-Mazini, in the Gaza Strip.

The IDF added that it is now attacking military targets of the Hezbollah terrorist organization in Lebanese territory.

-ABC News' Ellie Kaufman and Michal Dagon

Israeli Prime Minister Benjamin Netanyahu spoke with Russian President Vladimir Putin Monday evening, his office said.

"The Prime Minister made it clear that Israel had been attacked by brutal and abhorrent murderers, had gone to war determined and united and would not stop until it had destroyed Hamas's military and governing capabilities," the prime minister's office said in a statement.

-ABC News' Clark Bentson

Muhammad Abu Salima, the director of al-Shifa Hospital in Gaza City, provided an update on the dire conditions in the city after 10 days of attacks by Israel.

Many of the wounded patients are children and women, Abu Salima said.

He added that water is scarce inside the hospital due to the lack of electricity and there is a shortage of medicines and fuel.

The hospital added more beds to accommodate the extra patients, Abu Salima said.

-ABC News' Desiree Adib

Senate Minority Leader Mitch McConnell called on the United States to continue providing maximum assistance to Israel in the face of the "savage cold-blooded violence" perpetrated by Hamas.

In his first Senate floor remarks since the Oct. 7 attack, McConnell painted a visceral picture of "charred corpses" and "beheadings of children shot dead in their homes."

"Make no mistake, the surest way to stop violence against Israelis and oppression of Palestinians is to wipe terrorists like Hamas from the face of the Earth," he said. "To that end, the United States must continue to provide maximum support to Israel's counterterrorist operation as long as it takes."

-ABC News' Allison Pecorin

Human Rights Watch has accused Israel of using white phosphorus munitions in military operations in Gaza on Wednesday, saying it violated international humanitarian law by putting civilians at unnecessary risk.

In a report released Thursday, Human Rights Watch said it based its determination on a video it said it has verified, as well as two eyewitness accounts.

The Israel Defense Forces said in a statement to ABC News that claims they used white phosphorus in Gaza are "unequivocally false."

ABC News geolocated a video showing a jellyfish-shaped plume of white smoke over the port of Gaza. The video was posted on Wednesday by the official Palestinian news agency WAFA and matches images posted on social media and by other news outlets on the day.

Two experts -- Amael Kotlarski, the weapons team manager for the defense intelligence firm Janes, and Amnesty International weapons investigator Brian Castner -- told ABC News that images suggested munitions deployed over the port of Gaza on Wednesday appeared to contain white phosphorus.

"We have verified that Israeli artillery forces striking Gaza are equipped with M825 and M825A1155mm white phosphorus projectiles," Castner told ABC News, pointing to photographs by an Anadolu Agency photographer taken on Monday and showing Israeli troops handling shells labeled "M825A1."

Kotlarski said visual evidence alone was not sufficient to confirm that these specific shells were used in the Gaza port strikes.

There are "perfectly legal" military uses for white phosphorus munitions, Kotlarski said, including to create a smoke screen to conceal movements, to mark targets for artillery or air strikes, or to illuminate a battlefield. However, its use in urban areas is "problematic due to the higher risk of collateral damage," Kotlarski said, including the munitions' potential to cause severe burns.

White House Principal Deputy Press Secretary Olivia Dalton said Friday the U.S. had not independently verified allegations Israel used white phosphorous "so that is not something I would want to speculate about or weigh in on at this time."

-ABC News' Christopher Looft, Ben Gittleson and Jordana Miller