Associated Press – Relentless Israeli airstrikes pounded Beirut’s southern suburbs overnight and closed off the main highway linking Lebanon with Syria, forcing fleeing civilians to cross the border by foot.

The airstrikes came as the supreme leader of Iran, which backs the anti-Israel militant groups Hamas and Hezbollah, praised the country’s recent missile strike on Israel and said Friday it was ready to do it again if necessary.

Hamas launched a surprise attack into Israel almost exactly a year ago, killing 1,200 Israelis, taking 250 people hostage, and setting off a war with Israel that has shattered much of the Hamas-controlled Gaza Strip. More than 41,000 Palestinians have been killed since then in Gaza, according to the Gaza Health Ministry, which does not differentiate between fighters and civilians. It says more than half were women and children.

In late September, Israel shifted some of its focus to Hezbollah, which holds much of the power in parts of southern Lebanon and some other areas of the country, attacking the militants with exploding pagers, airstrikes and, eventually, incursions into Lebanon.

Here is what to know.

What Is the Latest on Israel’s Operations in Lebanon?

Israel said it targeted the crossing with Syria because Hezbollah militants were using it to bring in weapons, and that its jets had also struck a smuggling tunnel. Much of Hezbollah’s weaponry is believed to come from Iran through Syria.

Tens of thousands of people fleeing war in Lebanon have crossed into Syria over the past two weeks.

Israeli officials said they were targeting Hezbollah’s intelligence headquarters in the Beirut suburb airstrikes. It did not say if any militants were killed, but it says it has killed 100 Hezbollah fighters in the last 24 hours.

Nine Israeli soldiers have been killed in Lebanon. Two Israeli soldiers were also killed in a Thursday drone attack in northern Israel, military officials said. An umbrella group of Iranian-backed militias in Iraq calling itself the Islamic Resistance in Iraq said it carried out three drone strikes Friday in northern Israel.

The Israeli military launched a ground incursion into Lebanon earlier this week and has been fighting Hezbollah militants in a narrow strip of land along the border. A series of attacks before the incursion killed some of the group’s key members, including longtime leader Hassan Nasrallah.

Hezbollah, in a display of solidarity, began launching rockets into northern Israel just after Hamas’ October 7 cross-border attack.

On Thursday, Israel extended its evacuation warnings to communities in southern Lebanon, including and beyond an area that the United Nations had declared a buffer zone after Israel and Hezbollah fought a brief 2006 war.

Lebanese officials say nearly 1.2 million people have been displaced from their homes because of the fighting.

What Happened in the Airstrike on a West Bank Cafe?

A Thursday airstrike on a West Bank cafe, which Israeli officials said had targeted Palestinian militants, also killed a family of four, including two young children, relatives said.

Lebanon’s health ministry said at least 18 Palestinians had been killed.

The Israeli military said the airstrike in the Tulkarem refugee camp killed several militants, including Hamas’ leader in the camp, whom it accused of involvement in multiple attacks on Israeli civilians, and of planning an attack on Israel on the anniversary of the October 7 assault.

Tulkarem, a hotbed of Palestinian militancy, is frequently targeted by the Israeli military.

Airstrikes used to be rare in the Palestinian territory, but they have grown more common as Israeli forces clamp down, saying they want to prevent attacks on their citizens.

Israeli fire has killed at least 722 Palestinians in the West Bank since Oct. 7, Palestinian health officials say. In that time, Palestinian militants have launched a number of attacks on soldiers at checkpoints and within Israel.

What Is Iran Saying?

A top Iranian official warned Friday that it would harshly retaliate if Israel attacks Iran.

“If the Israeli entity takes any step or measure against us, our retaliation will be stronger than the previous one,” Foreign Minister Abbas Araghchi said in Beirut after meeting Lebanon’s Parliament Speaker Nabih Berri.

Mr. Araghchi’s visit came three days after Iran launched at least 180 missiles into Israel, the latest in a series of rapidly escalating attacks that threaten to push the Middle East closer to a regionwide war.