TEL AVIV, Israel >> Israel on Sunday hailed its successful air defenses in the face of an unprecedented attack by Iran, saying it and its allies thwarted 99% of the more than 300 drones and missiles launched toward its territory. But regional tensions remain high, amid fears of further escalation in the event of a possible Israeli counter-strike.

U.S. President Joe Biden said he would convene a meeting of the Group of Seven advanced democracies on Sunday “to coordinate a united diplomatic response to Iran’s brazen attack.” The language indicated that the Biden administration does not want to spiral into a broader military conflict. A top U.S. official said the U.S. had informed Israel it does not plan on striking Iran itself.

Iran launched the attack in response to a strike widely blamed on Israel on an Iranian consular building in Syria earlier this month which killed two Iranian generals. Israel said Iran launched 170 drones, more than 30 cruise missiles and more than 120 ballistic missiles.

By Sunday morning, Iran said the attack was over and Israel reopened its air space.

The two foes have for years been engaged in a shadow war marked by incidents like the Damascus strike. But Sunday’s assault, which set off air raid sirens across Israel, was the first time Iran has launched a direct military assault on Israel, despite decades of enmity dating back to the country’s 1979 Islamic Revolution.

Israel has over the years established — often with the help of the United States — a multilayered air-defense network that includes systems capable of intercepting a variety of threats including long-range missiles, cruise missiles, drones and short-range rockets.

That system, along with collaboration with the U.S. and other forces, helped thwart what could have been a far more devastating assault at a time when Israel is already bogged down in its war against Hamas in Gaza and engaged in low-level fighting on its northern border with Lebanon’s Hezbollah militia. Both Hamas and Hezbollah are backed by Iran.

Israeli and U.S. officials lauded the response to the aerial assault.

“Iran launched more than 300 threats and 99% were intercepted,” said Rear Adm. Daniel Hagari, the Israeli military spokesman. “That is a success.” Asked if Israel would respond, Hagari said the country would do what was needed to protect its citizens.

Hagari said that none of the drones and cruise missiles reached Israel and that only a few of the ballistic missiles got through. He said that of the cruise missiles, 25 were shot down by the Israeli air force.

Hagari said minor damage was caused to an Israeli airbase, but he said it was still functioning. Rescuers said a 7-year-old girl was seriously wounded in southern Israel, apparently in a missile strike, though they said police were still investigating the circumstances of her injuries.

Israeli Prime Minister Benjamin Netanyahu posted a short message on X, formerly Twitter: “We intercepted. We blocked. Together, we will win.”

Defense Minister Yoav Gallant also celebrated the results, thanking the U.S. and other countries for their assistance.

Israel announced it reopened its airspace, loosening one restriction it had imposed ahead of the strike, although schools remained closed around the country and traffic on the first day of the Israeli workweek was lighter than usual as many people stayed home or recovered from the long night. Neighboring Jordan also reopened its airspace.

Gen. Mohammad Hossein Bagheri, the chief of staff of the Iranian armed forces, said the operation was over, the state-run IRNA news agency reported.

“We have no intention of continuing the operation against Israel,” he was quoted as saying.

Iran’s president, Ebrahim Raisi, claimed Iran had taught Israel a lesson and warned that “any new adventures against the interests of the Iranian nation would be met with a heavier and regretful response from the Islamic Republic of Iran.”

Israel may be particularly proud of the success of its defense because it stands in sharp contrast to the failures it endured during Hamas’ attack on Oct. 7. Facing a far less powerful enemy in Hamas, Israel’s border defenses collapsed and the military took days to repel the marauding militants — an embarrassing defeat for the Middle East’s strongest and best-equipped army.

While thwarting the Iranian onslaught could help restore Israel’s image, what it does next will be closely watched both in the region and in Western capitals.

In Washington, Biden said U.S. forces helped Israel down “nearly all” the drones and missiles and pledged to convene allies to develop a unified response.

Biden, who had cut short a weekend stay at his Delaware beach house to meet with his national security team at the White House on Saturday afternoon, spoke with Netanyahu later in the day.

“I told him that Israel demonstrated a remarkable capacity to defend against and defeat even unprecedented attacks — sending a clear message to its foes that they cannot effectively threaten the security of Israel,” Biden said.

During the call, Biden encouraged Israel to proclaim the interceptions a success against Iran and made clear the U.S. would not participate in any offensive action against Iran, according to a senior administration official. The official spoke on condition of anonymity because he was discussing a private conversation between the leaders.

Secretary of State Antony Blinken said the U.S. does “not seek escalation,” and would hold talks with its allies in the coming days.

The U.S., along with its allies, has sent direct messages to Tehran to warn against further escalating the conflict. Leaders from the G7 will hold a video conference on Sunday early afternoon to discuss the Iranian strikes against Israel, according to Italy, which holds the presidency of the group of developed countries, which includes the United States, Japan, Germany, France, Britain, and Canada.

Iran’s paramilitary Revolutionary Guard issued a new threat against the U.S. “The terrorist U.S. government is warned any support or participation in harming Iran’s interests will be followed by decisive and regretting response by Iran’s armed forces,” said a statement carried by IRNA.

Israel and Iran have been on a collision course throughout Israel’s six-month war against Hamas militants in Gaza, triggered by the Oct. 7 attack on Israel. On that day, militants from Hamas and Islamic Jihad, also backed by Iran, killed 1,200 people in Israel and kidnapped 250 others.

An Israeli offensive in Gaza has caused widespread devastation and killed over 33,000 people, according to local health officials.

Negotiations underway, meant to bring about a cease-fire in exchange for the release of the hostages, appeared to hit a setback Sunday. Netanyahu’s office said that Hamas rejected the latest proposal for a deal, which had been presented to Hamas a week ago by mediators Qatar, Egypt and the United States.

A Hamas official said the group wants a “clear written commitment” that Israel will withdraw from the Gaza Strip during the second of a three-phase cease-fire deal. The deal presented to the sides calls for a six-week cease-fire in Gaza, during which Hamas would release 40 of the more than 100 hostages the group is holding in the enclave in exchange for 900 Palestinian prisoners from Israel’s jails, including 100 serving long sentences for serious crimes.

Hamas welcomed Iran’s attack, saying it was “a natural right and a deserved response” to the strike in Syria and urged the Iran-backed groups in the region to continue to support Hamas in the war against Israel.

Almost immediately after the war erupted, Hezbollah began attacking Israel’s northern border. The two sides have been involved in daily exchanges of fire, while Iranian-backed groups in Iraq, Syria and Yemen have launched rockets and missiles toward Israel.

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Associated Press writers Amir Vahdat in Tehran, Iran, Samy Magdy in Cairo, Omar Akour in Amman, Jordan and Giada Zampano in Rome contributed to this report.