Israel-Gaza updates: Israeli forces preparing for 'wide range of offensive plans'

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."

Click here for the latest updates.


Timeline: The Hamas attack and response

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.

Click here for the full timeline


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Biden administration to remain in 'constant contact' with leaders in the region

President Joe Biden said he spoke with Jordanian King Abdullah II, members of the U.S. Congress and directed his national security team to remain in contact with their Israeli counterparts.

"I've also directed my team to remain in constant contact with leaders throughout the region including Egypt, Turkey, Qatar, Saudi Arabia, Jordan, Oman, UAE, as well as our European partners and the Palestinian Authority," Biden said.


Biden says support for Israel's security is 'rock solid and unwavering'

President Joe Biden delivered remarks from the White House on Saturday expressing U.S. support for Israel in light of Hamas' attack.

"We will not ever fail to have their back," Biden said.

"Israel has the right to defend itself and his people full stop. There is never a justification for terrorist attacks and my administration's support for Israel security is rock solid and unwavering. Let me say this as clearly as I can. This is not a moment for any party hostile to Israel to exploit these attacks to seek advantage. The world is watching," Biden said.


Blinken speaks with Israeli president, foreign minister

Secretary of State Antony Blinken "reaffirmed" the U.S.' solidarity with Israel during a call with Israeli President Isaac Herzog and Foreign Minister Eli Cohen, a State Department spokesperson said.

"Secretary Blinken reiterated his condolences for the victims of the terrorist attacks against Israel and condemned those attacks in the strongest terms," the spokesperson, Matthew Miller, said in a statement. "Secretary Blinken also discussed measures to bolster Israel’s security. The Secretary underscored the United States' unwavering support for Israel's right to defend itself."


Biden to speak at 2:30 p.m.

President Joe Biden is set to deliver remarks at 2:30 p.m. on the attacks in Israel from the State Dining Room, according to the White House.

-ABC News' Fritz Farrow


20K US citizens contact State Dept. for help amid conflict: Officials

As the Biden administration intensifies efforts to help American nationals leave Israel and Gaza, more than 20,000 U.S. citizens have reached out to the State Department asking for help in the wake of the Hamas attacks, including several hundred seeking to leave Gaza, according to two U.S. officials.

While not all have actively sought assistance with transportation, "many thousands" across Israel have indicated they needed help finding flights out of the country, the officials said.

Government-chartered planes have now started to ferry U.S. citizens from Israel to other countries in the region, though one official said the State Department still cannot share a detailed breakdown on the number of Americans whose departure it has already facilitated or the number of Americans still waiting for help "given this is an unfolding situation."

For Americans in Gaza, the U.S. is still eyeing the Rafah border crossing between Gaza and Egypt as a means of safe passage. Officials say they are very hopeful they will be able to work with Israel and Egypt to establish a corridor for U.S. citizens and other foreign nationals, but that it could take days to make substantial progress.

The Israeli government estimated that between 100 to 130 Americans were living in Gaza earlier this year. An official says the State Department believes hundreds more are visiting -- putting the total number in Gaza potentially between 500 and 600.

The State Department estimates that roughly 500,000 American citizens reside in Israel.

-ABC News' Shannon K. Crawford