Early Sunday morning, Israel Defense Forces Lt. Col. Jonathan Conricus went live on X and stated Hamas is blocking "the evacuation of civilians."

IDF said Hamas issued warnings to residents in Gaza to ignore Israel’s evacuation notice that was issued Friday morning. When civilians did try to leave, Hamas "stopped civilians” and “convoys of Gazan civilians trying to flee," according to Conricus.

Conricus said, "Through the night, rockets were fired at Tel Aviv and southern Israel" and combat is happening "in and around" the northern part of the Gaza Strip while the IDF is continuing to attack "different military targets belonging to Hamas."

"The next stage of operations will be enhanced operations against Hamas until we dismantle Hamas and its military capabilities," said the IDF spokesperson.

Florida Gov. Ron DeSantis told reporters on Saturday, "We already have planes that have left Israel air space and are on its way to Florida. We are going to end up having hundreds and hundreds of Floridians that are going to be brought back to Florida in the ensuing days."

DeSantis told reporters earlier in the day the planes will land on Sunday.

"We have a lot of Floridians there," DeSantis said Friday. "The federal government really wasn't doing what they needed to do get people out, so we just did an executive order yesterday. We’re going to be sending flights from Israel, back to Florida."

-ABC News' Will McDuffie and Hannah Demissie

In an interview with ABC News' Phil Lipof, Israel Defense Forces spokesman Lt. Col. Jonathan Conricus said they are preparing for an "intensification of our combat operations."

"The aim of our operation is to dismantle Hamas and its military capabilities to make sure that Hamas will never again have the ability to kill or abduct or threaten Israeli civilians," Conricus said.

Conricus said more than 400,000 people have evacuated Gaza to the south before it becomes an "active combat zone." Asked about the risk to civilians who remain, he conceded it will be a "difficult and dangerous" environment for them.

"Wherever applicable and wherever the situation on the ground allows us to do so, we will spare the life of civilians and we will try to apply our force in such a way that it causes minimal damage to civilians," he said.

"We will do our best not to strike civilians. They are not our enemy," he added.

Iran's Mission to the United Nations warned Saturday of "far-reaching consequences" if Israel doesn't stop attacking Gaza.

"If the Israeli apartheid’s war crimes & genocide are not halted immediately, the situation could spiral out of control & ricochet far-reaching consequences," Iran's Mission to the UN said on X, adding the responsibility lies with the international community.

Earlier Saturday, Iranian Foreign Minister Hossein Amirabdollahian also called on Israel to stop its attacks, warning that the conflict could spread, The Associated Press reported.

In remarks with Israeli Prime Minister Benjamin Netanyahu, Secretary of State Antony Blinken said at least 25 Americans had now been confirmed dead in Israel.

Netanyahu described some of the atrocities committed by Hamas.

"Hamas has shown itself to be an enemy of civilization: The massacring of young people in an outdoor music festival, the butchering of entire families, the murder of parents in front of their children and the murder of children in front of their parents. The burning of people alive, the beheadings," he said.

"Hamas should be treated exactly the way ISIS was treated," he said. "They shouldn't be spit out from the community of nations. No leader should meet them. No country should harbor them. And those that do should be sanctioned."

Blinken said he was speaking not only as an American diplomat, but as a Jew, a husband and a father of young children, saying it was impossible for him to look at photos of families killed "and not think of my own children."

"The same time that we've been shocked by the depravity of Hamas, we've also been inspired by the bravery of Israel citizens," he said. "The grandfather who drove over an hour to a kibbutz under siege, armed only with a pistol and rescued his kids and grandkids. The mother who died shielding her teenage son with her body, giving her life to save his -- giving him life for a second time."

Blinken remarked that some U.S. aid had already been delivered, and that more military aid was on his way. He said the administration would work with Congress to meet Israel’s additional needs and that bipartisan support for Israel was "overwhelming."

The secretary called on world leaders to condemn Hamas.

Blinken also reiterated that Israel "has the right -- indeed, the obligation -- to defend itself" but that it was "so important to take every possible precaution to avoid harming civilians."

-ABC News' Shannon Crawford