Israel-Gaza updates: 22, including 18 children, reported dead in Rafah strikes

The Iranian envoy to the United Nations said Sunday that "the issue can be considered closed," referencing Iran's attack on Israel.

The envoy also warned the U.S. to "stay away" from the escalating conflict between the two countries.

"If the Israeli regime makes another mistake, the response of the Islamic Republic of Iran will be considerably more severe," the envoy said, referring to Israel's strike earlier this month on Iran's Consulate in Damascus, Syria, that killed a top Iranian military leader. "This is a conflict between Iran and the rogue regime of Israel, and America should stay away from it."

Iran's state news agency IRNA also reported Sunday that the Islamic Revolutionary Guard Corps (IRGC) issued a stern warning to the U.S. "against supporting and participating in any action that harms Iranian interests. In its statement, the IRGC threatened "a reciprocal and proportional response to American and Israeli threats originating from any country."

The Iranian foreign minister posted on his X account: "Exercising the right of legitimate defense shows Iran's responsible approach to regional and international peace and security. At this point, the Islamic Republic of Iran has no intention of continuing defensive operations, but if necessary, it will not hesitate to protect its legitimate interests against any new aggression."

-ABC News' Somayeh Malekian and Dana Savir

Israeli military officials on Sunday said the Iranian attack had been "thwarted" by Israel and its allies, but warned that the threat of further strikes continued.

Most of the more than 300 drones, missiles and other threats Iran launched were intercepted by Israeli and allied defenses before entering Israel, the Israel Defense Forces said.

"99% of the threats launched towards Israeli territory were intercepted -- a very significant strategic achievement," IDF spokesperson Daniel Hagari said.

The military defense was coordinated with a group of international allies, including the United States, United Kingdom and France, Hagari said.

"This partnership has always been robust, but last night it was exceptionally evident," he said.

The attack included at least 170 uncrewed drones, none of which made it into Israeli territory, he said.

About 25 of the 30 cruise missiles launched were intercepted by Israeli fighter jets before entering Israel, Hagari said.

And more than 120 ballistic missiles were launched, with "only a few" striking targets within Israel, he said. Those that made it through struck Nevatim Air Force Base, causing "minor damage to infrastructure," he said. The base remained open, he added.

"However, it is important to say -- the event is not over," Hagari said. "We remain prepared and ready for further developments and threats."

-ABC News' Edward Szekeres and Kevin Shalvey

The U.S. Embassy in Jerusalem early on Sunday lifted its shelter-in-place order for US government employees after the threat from Iranian drones and missiles "diminished."

But the embassy warned that security in Israel "remains complex" and can change quickly.

"The U.S. Embassy in Jerusalem reminds U.S. citizens of the continued need for caution and increased personal security awareness as security incidents often take place without warning," the embassy said in a security alert.

-ABC News' Christopher Boccia and Kevin Shalvey

Secretary of State Antony Blinken condemned Iran's attack on Israel, saying the U.S. doesn't seek escalation but will support Israel's right to defend itself and will protect U.S. personnel in the Middle East.

"The United States condemns Iran's attack on Israel in the strongest terms," Blinken said in a statement.

He added that he'll be "consulting with allies and partners in the region and around the world in the hours and days ahead."

-ABC News' Shannon K. Crawford