Justice or Assassination: Leaders React to Israel's Killing of Nasrallah

World leaders warned of potential repercussions on Saturday after Lebanese armed group Hezbollah announced its longtime leader Hassan Nasrallah was killed in an Israeli air strike on a suburb of Beirut.

The killing of the Iran-backed group's chief has intensified fears of all-out war in the Middle East.

US President Joe Biden welcomed "a measure of justice".

- Iran -

First Vice President Mohammad Reza Aref warned Israel that Nasrallah's death would "bring about their destruction", Iran's ISNA news agency quoted him as saying.

The foreign ministry of Iran, which finances and arms Hezbollah, said Nasrallah's work will continue after his death. "His sacred goal will be realized in the liberation of Quds (Jerusalem), God willing," spokesman Nasser Kanani posted on X.

Supreme leader Ali Khamenei announced five days of public mourning.

- United States -

Biden said Nasrallah's death was "a measure of justice for his many victims, including thousands of Americans, Israelis and Lebanese civilians".

Washington supports Israel's right to defend itself against "Iranian-supported terrorist groups" and the "defense posture" of US forces in the region would be "further enhanced", Biden added in a statement.

Vice President Kamala Harris said Nasrallah was "a terrorist with American blood on his hands" and said she would "always support Israel´s right to defend itself against Iran and Iran-backed terrorist groups such as Hezbollah, Hamas, and the Houthis."

Leading Republicans in the House of Representatives also welcomed the end of a "reign of bloodshed, oppression, and terror" by "one of the most brutal terrorists on the planet".

- Russia -

Russia's foreign ministry said "we decisively condemn the latest political murder carried out by Israel" and urged it to "immediately cease military action" in Lebanon.

Israel would "bear full responsibility" for the "tragic" consequences the killing could bring to the region, the ministry added in a statement.

- Germany -

Foreign Minister Annalena Baerbock told ARD television that the killing "threatens destabilization for the whole of Lebanon", which "is in no way in Israel's security interest".

- Canada -

Canadian Prime Minister Justin Trudeau described Nasrallah as "the leader of a terrorist organization that attacked and killed innocent civilians, causing immense suffering across the region".

But he called for more to be done to protect civilians in the conflict, adding: "We urge calm and restraint during this critical time."

- Britain -

Foreign Secretary David Lammy said in a post on X that he had spoken with the Lebanese premier.

"We agreed on the need for an immediate ceasefire to bring an end to the bloodshed. A diplomatic solution is the only way to restore security and stability for the Lebanese and Israeli people," he said.

- France -

French Foreign Minister Jean-Noel Barrot demanded Israel "immediately stop its strikes in Lebanon" and said it was opposed to any ground operation in the country.

France also "calls on other actors, notably Hezbollah and Iran, to abstain from any action that could lead to additional destabilization and regional conflagration", the foreign ministry said in a statement.

- United Nations -

UN chief Antonio Guterres said he was "gravely concerned by the dramatic escalation of events in Beirut in the last 24 hours".

- Hamas -

Palestinian armed group Hamas, whose unprecedented October 7 attack on Israel sparked the devastating war in Gaza that drew in fellow Iran-backed groups including Hezbollah, called Nasrallah's killing "a cowardly terrorist act".

"We condemn in the strongest terms this barbaric Zionist aggression and targeting of residential buildings," Hamas said in a statement.

- Palestinian Authority -

Palestinian President Mahmud Abbas offered his "deep condolences" to Lebanon for the deaths of Nasrallah and civilians, who "fell as a result of the brutal Israeli aggression", according to a statement from his office.

- Houthis -

The Iran-backed Yemeni Houthis militias, who have been firing on ships in the Red Sea in solidarity with Hamas, said in a statement that Nasrallah's killing "will increase the flame of sacrifice, the heat of enthusiasm, the strength of resolve" against Israel, with their leader vowing Nasrallah's death "will not be in vain".

- Türkiye -

President Recep Tayyip Erdogan, whose country maintains diplomatic relations with Israel but who has been a sharp critic of its offensive in Gaza, said on X that Lebanon was being subjected to a "genocide", without referring directly to Nasrallah.

- Cuba -

In a post on X, Cuban President Miguel Diaz-Canel called the killing a "cowardly targeted assassination" that "seriously threatens regional and global peace and security, for which Israel bears full responsibility with the complicity of the United States."

- Argentina -

Argentine President Javier Milei reposted on X a message from a member of his council of economic advisers, David Epstein, who hailed the killing.

"Israel eliminated one of the greatest contemporary murderers. Responsible, among others, for the cowardly attacks in #ARG," it said. "Today the world is a little freer".

- Venezuela -

Venezuelan President Nicolas Maduro expressed solidarity with Nasrallah and Lebanon.

"They want to justify it, but to assassinate him, they attacked buildings, housing estates and killed hundreds of people. There's a word for this: crime."

US State Department officials have identified nearly 500 potential incidents of civilian harm during Israel's military operations in Gaza involving US-furnished weapons, but have not taken further action on any of them, three sources, including a US official familiar with the matter, said this week.

The incidents - some of which might have violated international humanitarian law, according to the sources - have been recorded since Oct. 7, 2023, when the Gaza war started. They are being collected by the State Department's Civilian Harm Incident Response Guidance, a formal mechanism for tracking and assessing any reported misuse of US-origin weapons.

State Department officials gathered the incidents from public and non-public sources, including media reporting, civil society groups and foreign government contacts.

The mechanism, which was established in August 2023 to be applied to all countries that receive US arms, has three stages: incident analysis, policy impact assessment, and coordinated department action, according to a December internal State Department cable reviewed by Reuters.

None of the Gaza cases had yet reached the third stage of action, said a former US official familiar with the matter. Options, the former official said, could range from working with Israel's government to help mitigate harm, to suspending existing arms export licenses or withholding future approvals.

The Washington Post first reported the nearly 500 incidents on Wednesday.

The Biden administration has said it is reasonable to assess that Israel has breached international law in the conflict, but assessing individual incidents was "very difficult work," State Department spokesperson Matthew Miller told reporters on Wednesday.

"We are conducting those investigations, and we are conducting them thoroughly, and we are conducting them aggressively, but we want to get to the right answer, and it's important that we not jump to a pre-ordained result, and that we not skip any of the work," Miller said, adding that Washington consistently raises concerns over civilian harm with Israel.

The administration of President Joe Biden has long said it is yet to definitively assess an incident in which Israel has violated international humanitarian law during its operation in Gaza.

John Ramming Chappell, advocacy and legal adviser at the Center for Civilians in Conflict, said the Biden administration "has consistently deferred to Israeli authorities and declined to do its own investigations."

"The US government hasn't done nearly enough to investigate how the Israeli military uses weapons made in the United States and paid for by US taxpayers," he said.

The civilian harm process does not only look at potential violations of international law but at any incident where civilians are killed or injured and where US arms are implicated, and looks at whether this could have been avoided or reduced, said one US official, who spoke on condition of anonymity.

A review of an incident can lead to a recommendation that a unit needs more training or different equipment, as well as more severe consequences, the official said.

Israel's military conduct has come under increasing scrutiny as its forces have killed more than 43,000 Palestinians in Gaza, according to the enclave's health authorities.

The latest episode of bloodshed in the decades-old Israeli-Palestinian conflict was triggered on Oct. 7, 2023, when Palestinian Hamas fighters attacked southern Israel, killing 1,200 people and abducting 250 others, according to Israeli tallies.

Justice or Assassination: Leaders React to Israel's Killing of Nasrallah