U.S. President Joe Biden said on October 4 there had been no decision yet on what type of response Israel should mount against Iran but advised against striking Iran's oil facilities.
"If I were in their shoes, I'd be thinking about other alternatives than striking oil fields," Biden said in a rare appearance in the White House briefing room a day after saying such strikes were being discussed.
Biden added that the Israelis "have not concluded how they're -- what they're going to do" in retaliation for a massive ballistic-missile attack by Iran on Israel on October 1.
Biden also told reporters that Israeli Prime Minister Benjamin Netanyahu should remember U.S. support for Israel when deciding on next steps. He added that he had been trying to rally the world to avoid all-out war in the Middle East.
Earlier on October 4, Supreme Leader Ayatollah Ali Khamenei used a rare public sermon to defend Iran's missile attack against Israel earlier this week, saying it was "legitimate and legal" and that "if needed," Tehran will do it again.
Speaking in both Persian and Arabic during Friday Prayers in central Tehran, Khamenei said Iran and the regional proxies it supports won't back down from Israel as fears of a wider regional conflict grow amid a wave of multiple massive air strikes and a land incursion by Israel into Lebanon.
Iran will not "procrastinate nor act hastily to carry out its duty" in confronting Israel, Khamenei said.
Khamenei's address came hours after huge explosions shot balls of flame high into the sky as Israeli air strikes rocked the suburbs of Beirut, with large blasts just outside Beirut's international airport, which borders Dahieh -- a stronghold in the capital of Hezbollah, a militant group and political party that controls much of southern Lebanon.
The Israeli military did not comment on the target of the strikes, but some media and analysts speculated that the location, size, and scope indicated that it could be Hashem Safieddine, who is widely considered the front-runner to take over the leadership of Hezbollah. It was not immediately clear whether Safieddine was killed in the strikes.
SEE ALSO: Who Is Hashem Safieddine, The Senior Hezbollah Leader?The group's previous leader, Hassan Nasrallah, was killed last week in Israeli air strikes on a command center for Hezbollah, which is designated as a terrorist organization by the United States, while the European Union blacklists its armed wing but not its political party, which has seats in the Lebanese parliament.
Iran's massive ballistic-missile attack was the largest so far against Israel and came in retaliation for the campaign started by the Jewish state in southern Lebanon against Iran-backed Hezbollah, prompting the U.S. and Israeli warnings of countermeasures.
SEE ALSO: Iranians Fear 'War Is Coming' After Tehran's Missile Attack On IsraelKhamenei's October 4 appearance was the first time in almost five years that he had delivered a public sermon. The last time he led Friday Prayers was in January 2020 following an Iranian missile attack on a U.S. military base in Iraq in response to the killing of Revolutionary Guards commander Qassem Soleimani in a U.S. strike in Baghdad.
Mojata Najafi, a Paris-based analyst of Iranian affairs, told RFE/RL's Radio Farda by phone that Khamenei's speech "didn't say anything new" and appeared to be "aimed at lifting the morale of his followers" and "to dispel the fear about a potential act of terror by Israel."
"Even his comments about the Islamic republic not hesitating [to retaliate] while also not rushing is not new. This has been the policy of the Islamic republic in this current crisis from the start, [Tehran] has attempted to avoid falling into an all-out war."
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Blasts, Aftermath Seen In Beirut, Suburbs After Night Of Israeli Shelling
The latest Israeli strike early on October 4 cut off a road near the Masnaa border crossing between Lebanon and Syria that has been the escape route for hundreds of thousands of Lebanese civilians fleeing the conflict in recent days, according to Lebanese Transport Minister Ali Hamieh.
An Israeli strike on an apartment building in downtown Beirut on October 3 killed nine people in what was the first attack on the center of the Lebanese capital since 2006.
Israel said its air strike on Beirut was a precise operation, while a security source said that the target was an apartment building in the capital's central district of Bachoura, near the Lebanese parliament.
A Hezbollah-linked civil-defense group said seven of its members, including two medics, had been killed in the Beirut attack.
In a separate development, the Palestinian Health Ministry said that at least 18 Palestinians were killed in an Israeli strike on the Tulkarm refugee camp in the occupied West Bank on October 3.
The Israeli military said in a statement that the strike killed the head of Hamas's network in Tulkarm, identifying him as Zahi Yaser Abd al-Razeq Oufi, who it accused of participating in numerous attacks.
Hamas's armed wing late on October 4 confirmed the death of the commander in an Israeli strike.
Hamas has been designated a terrorist group by the United States and the European Union.
It's attack on Israel on October 7 last year sparked the current wave of fighting. Hamas fighters crossed into Israel and killed some 1,200 people. They also took some 240 people hostage with them as they returned to Gaza.