Israeli troops battled Hezbollah militants inside Lebanon on Wednesday after launching what they say are limited ground operations there. The region meanwhile braced for further escalation as Israel vowed to retaliate for the day before.

In Gaza, where the nearly yearlong war that triggered the rages on with no end in sight, Israeli ground and air operations in a hard-hit city killed at least 51 people, including women and children, Palestinian medical officials said.

Israel has continued to strike what it says are militant targets across Gaza nearly a year after .

The escalation on multiple fronts has raised fears of a wider war in the Middle East that could further draw in Iran 91裸聊视频� which backs Hezbollah and Hamas 91裸聊视频� as well as the United States, which in support of Israel.

Hezbollah says its fighters clashed with Israeli troops

Hezbollah, widely seen as the most powerful armed group in the region, said its fighters clashed with Israeli troops in two places inside Lebanon near the border. The Israeli military said ground forces backed by airstrikes had killed militants in 91裸聊视频渃lose-range engagements91裸聊视频� without saying where.

The military also announced that soldier 91裸聊视频� a 22-year-old captain in a commando brigade 91裸聊视频� was killed in combat in Lebanon, the first such death since the start of the latest operations.

Israeli media reported infantry and tank units operating in southern Lebanon after the military sent thousands of additional troops and artillery to the border.

The Lebanese army said Israeli forces had advanced some 400 meters (yards) across the border and withdrew 91裸聊视频渁fter a short period,91裸聊视频� its first confirmation of the incursion.

The Israeli military has warned people in around 50 villages and towns to evacuate north of the Awali River, some 60 kilometers (37 miles) from the border and much farther than the northern edge of intended to serve as a buffer between Israel and Hezbollah after their 2006 war. Hundreds of thousands have already fled their homes as the conflict has intensified.

Israel has said it will continue to strike Hezbollah until it is safe for tens of thousands of its citizens displaced from homes near the Lebanon border to return. Hezbollah has vowed to keep firing rockets into Israel until there is a cease-fire in Gaza with Hamas.

Israeli strikes have killed over 1,000 people in Lebanon over the past two weeks, nearly a quarter of them women and children, according to the Health Ministry.

Meanwhile, Israel lashed out at the United Nations on Wednesday, declaring Secretary-General Ant贸nio Guterres persona non grata, or banned from entering the country. Foreign Minister Israel Katz accused him of failing to unequivocally condemn the Iranian attack.

Guterres had released a brief statement after the barrage that read: 91裸聊视频淚 condemn the broadening of the Middle East conflict, with escalation after escalation. This must stop. We absolutely need a cease-fire.91裸聊视频�

The move deepens an already wide rift between Israel and the United Nations.

Palestinians describe massive raid in Gaza

The Health Ministry in Gaza said at least 51 people were killed and 82 wounded in the operation in Khan Younis that began early Wednesday. Records at the European Hospital show that seven women and 12 children, as young as 22 months old, were among those killed.

Another 23 people, including two children, were killed in separate strikes across Gaza, according to local hospitals.

The Israeli military did not immediately respond to a request for comment.

Residents said Israel had carried out heavy airstrikes as its ground forces staged an incursion into three neighborhoods in Khan Younis. Mahmoud al-Razd, who had four relatives among those killed, described heavy destruction and said first responders had struggled to reach destroyed homes.

91裸聊视频淭he explosions and shelling were massive,91裸聊视频� he told The Associated Press. 91裸聊视频淢any people are thought to be under the rubble, and no one can retrieve them.91裸聊视频�

Israel carried out a weekslong offensive earlier this year in Khan Younis . Over the course of the war, Israeli forces have repeatedly returned to areas of Gaza as militants have regrouped.

On Oct. 7, Hamas-led militants killed some 1,200 people, mostly civilians, and took around 250 hostage. Some 100 have not yet been released, around 65 of whom are believed to be alive.

Israel91裸聊视频檚 retaliatory offensive has killed over 41,000 Palestinians, according to the Health Ministry, which does not say how many were fighters but says . The military says it has killed over 17,000 militants, without providing evidence.

Iran fires missiles to avenge attacks on militant allies

Iran launched at least 180 missiles into Israel on Tuesday in what it said was retaliation for a series of Israel has landed in recent weeks against Hezbollah, which has been firing rockets into Israel since began in solidarity with Hamas.

Israelis scrambled for bomb shelters as air raid sirens sounded and the orange glow of missiles streaked across the night sky.

The Israeli military said it , though some landed in central and southern Israel and two people were lightly wounded by shrapnel.

Several missiles landed in the Israeli-occupied West Bank, where one of them killed a Palestinian worker from Gaza who had been stranded in the territory since the war broke out.

Israeli Prime Minister Benjamin Netanyahu vowed to retaliate, saying Iran 91裸聊视频渕ade a big mistake tonight and it will pay for it.91裸聊视频�

U.S. President Joe Biden said his administration is 91裸聊视频渇ully supportive91裸聊视频� of Israel and that he91裸聊视频檚 discussing with aides what the appropriate response should be.

Iran said it would respond to any violation of its sovereignty with even heavier strikes on Israeli infrastructure.

Iran said it fired Tuesday91裸聊视频檚 missiles as retaliation for attacks that killed leaders of Hezbollah, Hamas and its own paramilitary Revolutionary Guard. It referenced and , both killed in an Israeli airstrike last week in Beirut. It also mentioned who was assassinated in Tehran in a suspected Israeli attack in July.

___

Magdy reported from Cairo. Associated Press writers Kareem Chehayeb in Beirut and Melanie Lidman in Tel Aviv, Israel contributed.

___

Follow AP91裸聊视频檚 war coverage at

Wafaa Shurafa And Samy Magdy, The Associated Press