ASHKELON, Israel — The Israeli navy, ready for the latest eruption of cross-border fighting with militant groups in Gaza, designated a code title for its operation simply hours after the lethal violence started: Guardians of the Partitions, a reference to the traditional ramparts of the Previous Metropolis of Jerusalem. The militant teams had their very own code title for his or her marketing campaign: Sword of Jerusalem.

By early Tuesday morning, barely 12 hours after Hamas, the Islamist militant group that holds sway in Gaza, had launched a shock volley of rockets towards Jerusalem, Israel had carried out a minimum of 130 retaliatory airstrikes within the Palestinian coastal territory, based on an Israeli navy spokesman, Lt. Col. Jonathan Conricus. Militant teams had fired a minimum of 200 rockets into Israel, Colonel Conricus mentioned.

Twenty-three Palestinians, together with 9 kids, had been killed within the airstrikes in a single day and 107 others had been wounded, based on well being officers in Gaza.

Colonel Conricus mentioned on Tuesday that 15 militants had been killed in strikes by jets and unmanned drones.

He didn’t affirm or reject the studies of civilian deaths, including, “We’re doing every part potential to keep away from collateral harm.”

Hamas mentioned that numerous its militants had been killed and that some others had been reported lacking in an Israeli assault on a goal, with out giving additional particulars.

Though the depth of the combating appeared to have waned barely through the night time, Colonel Conricus mentioned that the navy’s air marketing campaign was nonetheless in its “early levels.” Sporadic airstrikes and rocket barrages continued early Tuesday. Journalists had been unable to enter the coastal enclave on Tuesday morning due to rocket fireplace close to the crossing level from Israel.

The Israeli navy mentioned in a press release that it had strengthened its troops and was “ready for quite a lot of situations.”

The cross-border navy battle escalated quickly on Monday night after weeks of rising tensions and confrontations between the police and Palestinian protesters in and across the historical heart of Jerusalem, together with on the sacred Aqsa compound, recognized to Jews because the Temple Mount and to Muslims because the Noble Sanctuary. Hamas, casting itself because the Palestinian defender of the contested metropolis, had issued a collection of threats and ultimatums.

The rapid set off seems to have been a police raid on the mosque compound on Monday morning to disperse crowds and stone-throwing protesters with tear gasoline, stun grenades and rubber-tipped bullets. Greater than 330 Palestinians had been wounded, a minimum of three critically, based on the Palestinian Purple Crescent. Not less than 21 cops had been wounded.

However because the battle expanded and the airstrikes started, it shortly turned lethal.

In Beit Hanoun, northern Gaza, the Masri household was grieving for 2 younger boys who had been killed on Monday night. Ibrahim, 11, and Marwan, 7, had been enjoying exterior their residence when a missile struck, based on their uncle, Bashir al-Masri, 25.

For Mr. Masri, the assault confirmed that Israel had no concern for civilian life.

“They aim buildings with kids, they aim ambulances, they aim colleges,” he mentioned by phone. “And all of the world, starting with America, says that individuals in Gaza are terrorists. However we aren’t terrorists. We simply need to dwell in peace.”

He additionally referred to as on Israel to finish a blockade on Gaza that has positioned heavy restrictions on items and supplies, lest they be used to make weaponry. The blockade, coupled with related restrictions by Egypt, has crippled Gaza’s financial system and led to excessive unemployment.

“God is aware of how we dwell in Gaza — and the primary purpose is the Israeli siege,” mentioned Mr. Masri, who is among the roughly 50 p.c of Gazans with out work. “They need to kill us. However they can not.”

A few dozen miles north, in a suburb of Ashkelon, an Israeli seaside metropolis up the coast from Gaza, residents had been startled shortly earlier than 6 a.m. by a rocket strike on an house block. The rocket crashed via the window of a third-story house in Kohav HaTzafon, an space that’s residence to largely Russian immigrants, and it shattered a number of others with its influence.

Six folks wounded by the direct hit on the constructing, 4 of them from one household, had been transported to Barzilai Medical Heart, the primary hospital in Ashkelon. The mother and father had been in reasonable to severe situation and their two kids, ages 6 and 12, together with the 2 others had been flippantly wounded, based on the hospital.

The daddy of the household, Edward Weinstock, speaking on public radio from his hospital bed just a few hours later, mentioned that the rocket had landed in his son’s bed room and that the household had not had time to achieve the security of the stairwell. “Fortunate he was not there,” he mentioned of his son. “I discovered myself mendacity on the ground, not understanding what had occurred.”

Sitting among the many shattered glass in her son’s second-floor house, Maria Nagiv, 61, mentioned she understood little in regards to the occasions that had led to the assault.

“What occurred in Jerusalem?” she requested as shards crunched beneath her toes. “I haven’t been following something about that.”

She added: “All of the world says that the Jews make hassle. However what have I achieved improper? I didn’t do something, and so they nonetheless ship us bombs.”

A couple of minutes later, the sirens sounded once more, warning of one other rocket close by.

The Iron Dome, an Israeli antimissile protection system, efficiently intercepts about 90 p.c of rockets headed for populated areas, based on navy officers. However the system failed on Tuesday morning in Ashkelon.

A lot of the rockets fired out of Gaza throughout this spherical of combating have been short-range projectiles, primarily aimed toward civilian communities inside just a few miles of the border. Israeli colleges inside a 25-mile radius of Gaza had been ordered closed on Tuesday.

The Israeli navy mentioned that its targets had included the weapons manufacturing websites of Hamas and Islamic Jihad, one other militant group, in addition to navy services and two offensive tunnels. A Hamas battalion commander who was at residence in a residential house constructing was additionally focused, based on the navy.

Photographs from Gaza confirmed a nook house on an higher flooring of a multistory constructing that had been destroyed. Raed al-Dahshan, a Gaza civil protection spokesman, mentioned that the our bodies of three folks had been faraway from the ruins of the constructing; well being officers mentioned that they had been civilians. Neither the placement nor the situation of the particular person mentioned to be a battalion commander was instantly clear.

The navy wing of Hamas, generally known as the Qassam Brigades, issued a press release after the strike on the constructing warning Israel that if it saved hitting civilian homes, “We’ll flip Ashkelon into hell.”

The barrage of rockets shortly adopted.

Iyad Abuheweila contributed reporting from Gaza Metropolis and Myra Noveck from Jerusalem.