Israel-Gaza updates: 22, including 18 children, reported dead in Rafah strikes
The IDF says it struck military targets of terrorist organizations in Gaza.
Israel launched a retaliatory strike against Iran early Friday morning local time, a senior U.S. official told ABC News.
The strike followed Iran's attack on Saturday, when Tehran sent a volley of more than 300 drones and missiles toward targets in Israel, according to Israeli military officials. All but a few were intercepted by Israel and its allies, including the United States, officials said.
Iran's weekend attack came more than six months after Hamas terrorists invaded Israel on Oct. 7, after which the Israeli military began its bombardment of Gaza.
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What to know about Iran's attack on Israel
Israeli officials said the country's Iron Dome defense system endured a big test from Iran's attack on Saturday, intercepting 99% of the 300 "threats of various types" thrown at it.
Iran's Islamic Revolutionary Guard Corps, according to Israel Defense Forces spokesperson Daniel Hagari, launched 170 unmanned aerial vehicles (UAVs), more than 120 ballistic missiles and more than 30 cruise missiles in the attack.
Hagari said "99% of the threats launched towards Israeli territory were intercepted -- a very significant strategic achievement."
Hagari said the attack resulted in only one known Israeli casualty, a 7-year-old girl who was severely injured when she was struck by shrapnel apparently from an intercepted missile.
Israel says IDF killed head of Hamas' Emergency Bureau
The Israel Defense Forces said its fighter jets struck and killed Hatem Alramery, the head of Hamas' Emergency Bureau, in Gaza on Monday night.
Hamas said civilians were also killed in the strike.
Hamas says Israel is being 'stubborn' in negotiations
Hamas officials are accusing the Israelis of being "stubborn" during the latest round of negotiations in Cairo.
"Despite this," Hamas officials said in a statement, Hamas leaders are "studying the submitted proposal … and will inform the mediators of its response once this is completed."
CIA Director Bill Burns presented a new hostage/cease-fire proposal in Cairo this weekend, which included an initial release of 40 hostages in exchange for six-week cease-fire, a source familiar with the negotiations told ABC News.
CIA director presented new hostage-release deal: Source
A source tells ABC News that CIA Director William J. Burns presented a new hostage-release/cease-fire proposal in Cairo last weekend to help broker a deal between Israel and Hamas.
The source confirmed the proposal included an initial release of 40 hostages in exchange for a six-week cease-fire.
Officially, the CIA did not provide a comment.
-ABC News’ Cindy Smith and Ellie Kaufman
Highest number of aid trucks enter Gaza since start of war
A total of 419 humanitarian aid trucks entered Gaza on Monday, marking the highest number of aid trucks to enter Gaza in one day since the start of the war, according to Israeli aid agency COGAT.
This beats the record that was set one day earlier, when 322 trucks entered Gaza.
'Majority' of intel came from coalition partners ahead of attack: Israeli Air Force official
A senior Israeli Air Force official said that the normalization of relations with Middle Eastern countries "served us during this crucial time" this weekend.
"It has to be clear that real assets" provided Israel with "information" and an "early warning," and the "majority" of that intelligence came from the coalition, the senior Israeli Air Force official said at a Monday briefing.
In terms of the types of drones and missiles used by Iran in the Saturday night attack, the official said Israel did not face any types of missiles that it had not shot down during attacks in recent months by Iranian proxies.
The official confirmed that only "a handful" of ballistic missiles fired by Iran were not intercepted.
"Five, more or less, managed to penetrate," the official said.
He said Israel's "strategic investment" in air defense capabilities, made years ago, had paid off, and called Israel shooting down nearly all missiles a "historic success."
The official was asked if Israel would be able to withstand a similar level of attack from Iran, without the support of allies such as the U.S.
"It would be more challenging,” the official conceded, but added that Israel has capabilities "to face this kind of challenge."
-ABC News’ Tom Soufi Burridge