Hamas leader Yahya Sinwar, the mastermind behind the Oct. 7, 2023, attack on Israel, was killed this week in a firefight with Israeli forces, officials said.
The development comes as Israel continues intense air and ground campaigns against Hezbollah in Lebanon and against Hamas in the Gaza Strip.
The uptick in offensive operations came as Israeli leaders planned their response to Iran's latest ballistic missile attack.
Hezbollah announces 'escalated' phase in conflict with Israel after Sinwar's death
Hezbollah said Thursday they are transitioning into a "new, escalated phase" in the "confrontation with the Israeli enemy," after Israeli forces and officials announced the death of Hamas leader Yahya Sinwar.
This new phase in the conflict "will be revealed by the developments and events in the coming days," Hezbollah said in the statement.
-ABC News' Josiane Hajj Moussa
Oct 17, 2024, 5:53 PM EDT
IDF releases drone footage they say shows Sinwar before his death
The Israel Defense Forces released drone footage they say shows Hamas leader Yahya Sinwar on Wednesday before he was killed.
A damaged building and a man sitting in a chair with his face covered can be seen in the footage.
A still taken from drone footage shows what the Israel Defense Forces claim is Hamas leader Yahya Sinwar before he was killed in Gaza, Oct. 16, 2024.
Israel Defense Forces
IDF spokesperson Rear Adm. Daniel said Sinwar was wounded in a shooting and is shown in the footage throwing a wooden plank at the drone.
Oct 17, 2024, 2:13 PM EDT
Netanyahu says Israel will continue 'with all our strength'
Israel Prime Minister Benjamin Netanyahu celebrated the killing of Hamas leader Yahya Sinwar by Israeli forces on Thursday, but vowed to continue the war "with all our strength" until the hostages being held by Hamas in Gaza are returned.
"I would like to say again, in the clearest way: Hamas will no longer rule Gaza. This is the beginning of the day after Hamas, and this is an opportunity for you, the residents of Gaza, to finally break free from its tyranny," Netanyahu said in a recorded message.
"The war, my dears, is not over yet. And it is difficult, and it exacts heavy prices from us," Netanyahu said.
Chief of the Palestinian Islamist Hamas movement, Yahya Sinwar, appears before supporters during a rally marking the 35th anniversary of the group's foundation in Gaza City, Dec. 14, 2022.
Mohammed Abed/AFP via Getty Images
Netanyahu said Sinwar was killed when he fled IDF soldiers in a panic on Thursday.
"Now it is clear to everyone, in Israel and in the world, why we insisted on not ending the war. Why did we insist, in the face of all the pressures, to enter Rafah, the fortified stronghold of Hamas where Sinwar and many of the murderers hid," Netanyahu said.
"We are in a war for our existence. Big challenges are still ahead," Netanyahu said.
Oct 17, 2024, 1:21 PM EDT
Israeli President Herzog, Israeli Defense Minister comment on Sinwar's death
Israeli leaders celebrated the killing of Hamas leader Yahya Sinwar, who was assassinated by Israeli forces on Thursday.
Israel President Isaac Herzog commended the Israel Defense Forces for the killing and said Israel must act in every way possible to bring back the remaining 101 hostages being held by Hamas in Gaza.
"Sinwar, the mastermind behind the deadly October 7th attack, has for years been responsible for heinous acts of terrorism against Israeli civilians, citizens of other countries, and the murder of thousands of innocent people. His evil endeavors were dedicated to terror, bloodshed, and destabilizing the Middle East," Herzog said in a statement.
A demonstrator holds a sign about the killing of Hamas leader Yahya Sinwar during a protest calling for a cease-fire deal and the immediate release of hostages held by Hamas, Oct. 17, 2024, in Tel Aviv, Israel.
Ariel Schalit/AP
Israeli Minister of Defense Yoav Gallant also saluted IDF soldiers.
"The elimination of Sinwar joins a long series of eliminations -- from Nasrallah to Muhammad Deif and many more. We will pursue and eliminate our enemies. Sinwar died while beaten, persecuted and on the run -- he didn’t die as a commander, but as someone who only cared for himself," Gallant said in a statement.
"This is a clear message to all of our enemies -- the IDF will reach anyone who attempts to harm the citizens of Israel or our security forces, and we will bring you to justice," Gallant said.
Benny Gantz, the former IDF chief of staff and former minister of defense, applauded the killing, but said "the mission is not over."
"The IDF will continue to operate in the Gaza Strip for years to come, and now the series of achievements and the elimination of Sinwar must be taken advantage of to bring about the return of the abductees and the replacement of Hamas' rule. On this day, we will also remember the painful price of the war, all the murdered and martyrs, and we will strengthen all our heroic soldiers who have been working for over a year in all arenas to ensure that never again," Gantz said.