WATCH: Pentagon holds briefing as Middle East tensions climb after killing of Hamas leader

Pentagon deputy press secretary Sabrina Singh held a news briefing on Friday as tensions escalate in the Middle East after Israel was blamed for the killing of Hamas leaders.

Watch the event in the player above.

Mourners gathered in Doha on Friday to hold funeral prayers for slain Hamas leader Ismail Haniyeh as Iran and its regional allies vowed to retaliate against Israel.

With the bodies of Haniyeh and his bodyguard in coffins draped with Palestinian flags, men knelt and prayed while senior leaders of Hamas’ Qatar-based political office paid their respects to Haniyeh’s family.

That included two men seen as his possible successors: Khalil al-Hayya, a Hamas senior official, and former Hamas chief Khaled Mashaal, a close Haniyeh aide. The head of the Palestinian Islamic Jihad also attended.

Al-Hayya told family members that Haniyeh was “no better or dearer” than the children killed in Gaza. Some 39,480 Palestinians have been killed throughout the war, according to Gaza’s Health Ministry, which does not differentiate between civilians and combatants.

“We are sure that his blood will bring out victory, dignity and liberation,” he said.

The funeral came a day after Israel said it had confirmed that the head of Hamas’ military wing, Mohammed Deif, was killed in an July 13 airstrike in Gaza, and a few days after Israel said it had killed Hezbollah commander Fouad Shukur in a strike in Lebanon.

Hamas has yet to comment and had previously claimed Deif survived last month’s targeted airstrike.

Israel has yet to claim or deny a role in the killing of Haniyeh, but Hamas and its allies say it was responsible. The group said he was killed in a strike Wednesday on a Tehran guesthouse where he was staying while after attending the inauguration of Iran’s new president.

In his sermon during Muslim Friday prayers at Al-Aqsa Mosque in Jerusalem, Sheikh Ikrima Sabri led a prayer for Haniyeh, saying the people of the city were mourning for him. “We ask God Almighty to have mercy on him and to grant him a place in His spacious gardens,” he told thousands of worshippers.

Israeli police opened an investigation into Sabri for incitement. Since the start of the war, Palestinians have been arrested, fired by Israeli employers and expelled from Israeli schools for online speech deemed incendiary by authorities, rights groups say.

From Morocco to Iran, demonstrators took to the streets in a show of support for Haniyeh.

“Let Friday be a day of rage to denounce the assassination,” Hamas’ Izzat al-Risheq said in a statement.

Haniyeh had been among Hamas’ main negotiators throughout the cease-fire discussions, and his assassination could throw into disarray months of talks.

“You (Israel) cannot achieve peace by killing the negotiators and threatening diplomats,” Oncu Keceli, a spokesperson for Turkey’s Foreign Ministry, wrote on the social media platform X.

Meanwhile, Israeli airstrikes in Gaza continued. On Thursday, strikes on a school sheltering displaced Palestinians in the Gaza City district of Shujaiya killed at least 15 people and wounded more than 40 others, according to the Palestinian Civil Defense, which sent teams to recover bodies. Israel’s military alleged that Hamas fighters used the compound to plot attacks against Israel.