In just three days, this latest round of fighting between the bitter enemies has already begun to resemble — and even exceed — a devastating 50-day war in 2014. Like that previous war, neither side appears to have an exit strategy.

But there are key differences. The fighting has triggered the worst Jewish-Arab violence inside Israel in decades. And looming in the background is an international war crimes investigation.

Israel carried out an intense barrage of airstrikes just after sunrise, striking dozens of targets in several minutes that set off bone-rattling explosions across Gaza. Airstrikes continued throughout Wednesday, filling the sky with pillars of smoke.

At nightfall, the streets of Gaza City resembled a ghost town as people huddled indoors on the final night of Ramadan. The evening, followed by the Eid al-Fitr holiday, is usually a time of vibrant night life, shopping and crowded restaurants.

“There is nowhere to run. There is nowhere to hide,” said Zeyad Khattab, a 44-year-old pharmacist who fled with a dozen other relatives to a family home in central Gaza after bombs pounded his apartment building in Gaza City. “That terror is impossible to describe.”Gaza militants continued to bombard Israel with nonstop rocket fire throughout the day. The attacks brought life to a standstill in southern communities near Gaza, but also reached as far north as the Tel Aviv area, about 70 kilometers (45 miles) to the north, for a second straight day.

“We''re coping, sitting at home, hoping it will be OK,” said Motti Haim, a resident of the central town of Beer Yaakov and father of two children. “It''s not simple running to the shelter. It''s not easy with the kids.”Gaza''s Health Ministry said the death toll rose to 65 Palestinians, including 16 children and five women. Islamic Jihad confirmed the deaths of seven militants, while Hamas acknowledged that a top commander and several other members were killed.

A total of seven people have been killed in Israel, including four people who died on Wednesday. Among them were a soldier killed by an anti-tank missile and a 6-year-old child hit in a rocket attack.

The Israeli military claims the number of militants killed so far is much higher than Hamas has acknowledged.

While United Nations and Egyptian officials have said that cease-fire efforts are underway, there were no signs of progress. Israeli television''s Channel 12 reported late Wednesday that Prime Minister Benjamin Netanyahu''s Security Cabinet authorized a widening of the offensive.

UN chief Antonio Guterres condemned the “indiscriminate launching of rockets” from civilian areas in Gaza toward Israeli population centers, but he also urged Israel to show “maximum restraint.” US Secretary of State Antony J. Blinken called Netanyahu to support Israel''s right to defend itself and said he was sending a senior diplomat to the region to try to calm tensions.

The current eruption of violence began a month ago in Jerusalem, where heavy-handed Israeli police tactics during the Muslim holy month of Ramadan and the threatened eviction of dozens of Palestinian families by Jewish settlers ignited protests and clashes with police. A focal point was the Al-Aqsa Mosque, built on a hilltop compound that is revered by Jews and Muslims, where police fired tear gas and stun grenades at protesters who threw chairs and stones at them.

Hamas, claiming to be defending Jerusalem, launched a barrage of rockets at the city late Monday, setting off days of fighting.

The Israeli military says militants have fired well over 1,000 rockets in just three days. That is nearly a quarter of the number fired during the entire 2014 war.

Israel, meanwhile, has struck over 350 targets in Gaza, a tiny territory where 2 million Palestinians have lived under a crippling Israeli-Egyptian blockade since Hamas took power in 2007. Two infantry brigades were sent to the area, indicating preparations for a possible ground invasion.

In tactics echoing past wars, Israel has begun to target senior members of Hamas'' military wing. It also has flattened three high-rise buildings in a tactic that has drawn international scrutiny in the past.

Israel says the buildings all housed Hamas operations centers, but they also included residential apartments and businesses. In all cases, Israel fired warning shots, allowing people to flee, and there were no reports of casualties.

The fighting has unleashed violent clashes between Arabs and Jews in Israel, in scenes that have not been seen since 2000. Netanyahu warned that he was prepared to use an “iron fist if necessary” to calm the violence.

But ugly clashes erupted across the country late Wednesday. Jewish and Arab mobs battled in the central city of Lod, the epicenter of the troubles, despite a state of emergency and nighttime curfew. In nearby Bat Yam, a mob of Jewish nationalists attacked an Arab motorist, dragged him from his car and beat him until he was motionless.

Israel and Hamas have fought three wars since the Islamic militant group seized power in Gaza from rival Palestinian forces in 2007.