Fighting is ongoing after Hamas launched an attack on Israel on Oct. 7.
At least 1,400 people have died and 3,400 others have been injured in Israel after the militant group Hamas launched an unprecedented incursion from air, land and sea on Oct. 7, Israeli authorities said.
In Gaza, 3,000 people have been killed and another 12,500 were injured, according to the Palestinian Ministry of Health.
Tensions are high with the prospect of ground war and evacuation orders for Gaza after the Israel Defense Forces called for "all residents of Gaza City to evacuate their homes" and "move south for their protection" early Friday, saying residents should move "and settle in the area south of the Gaza River." The announcement was made, according to the IDF, because it plans to "operate significantly in Gaza City in the coming days" and wanted "to avoid harming civilians."
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On the morning of Oct. 7, sirens echoed across Israel as Hamas terrorists began a full-fledged surprise attack from the air, sea and ground. Hundreds of armed Hamas fighters stormed into Israel from Gaza, charging into cities and gunning down citizens.
Israeli forces responded by sending wave after wave of bombs into Gaza, killing thousands, trapping civilians and raising fears of a wider conflict in the Middle East.
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American citizens were killed in the attacks on Israel, U.S. officials confirmed Sunday.
"We can confirm the deaths of several U.S. citizens. We extend our deepest condolences to the victims and to the families of all those affected," a U.S. official told ABC News in a statement.
--ABC News' MaryAlice Parks, Shannon Crawford
The Air Line Pilots Association (ALPA) -- which represents more than 74,000 pilots between 42 US and Canadian airlines, including majors like JetBlue, Delta, and United -- told members today its "working diligently" with carriers that fly to Israel to "ensure the safety of each of [its] members."
-ABC News' Amanda Maile
The White House has pledged assistance to Israel in responding to Hamas' attack -- and America has for decades maintained a vast pre-positioned military stockpile inside Israel.
First established in the wake of the Yom Kippur War of 1973, when it took time for the U.S. to send supplies to Israel, the munitions are available in case of emergencies.
It’s possible that Israel will ask the U.S. to tap into this stockpile, which contains weapons systems including tanks and ammunition stored in warehouses.
While not especially well known to the public, the supplies got some exposure earlier this year when the U.S. planned to use them in order to send artillery to Ukraine in responding to Russia's invasion.
-ABC News' Luis Martinez
Israeli rescue service Zaka said at least 260 bodies were removed from the venue of the music festival in southern Israel that came under a Hamas attack.
