Secretary of State Antony Blinken made a previously unannounced visit Wednesday to the Kerem Shalom border crossing, ​becoming the first cabinet-level U.S. official to visit the border of Gaza since the Oct. 7 attacks.

Blinken attended a closed briefing on humanitarian assistance and deconfliction while he was at the site, which was shuttered for more than two months after the attacks.

Blinken was able to look into Gaza from the top of the massive concrete wall, according to pool reporters.

-ABC News' Shannon Crawford

Secretary of State Antony Blinken and Israeli Prime Minister Benjamin Netanyahu met in Jerusalem for 2 1/2 hours to discuss numerous topics about the ongoing conflict, according to the State Department.

Blinken discussed "the need to avoid further expansion of the conflict," and "reiterated the United States’ clear position on Rafah," State Department spokesman Matthew Miller said in a statement.

"The secretary discussed ongoing efforts to reach an immediate ceasefire in Gaza as part of a hostage deal and emphasized that it is Hamas that is standing in the way of a ceasefire," Miller added.

Blinken also discussed improving aid delivery into Gaza and "reiterated the importance of accelerating and sustaining that improvement," according to Miller.

Prior to meeting with Netanyahu, Blinken spoke with the families of hostages that had gathered outside his hotel in Tel Aviv.

-ABC News' Joseph Simonetti

The World Central Kitchen resumed aid services in Gaza for the first time since seven of its members were killed earlier this month in an Israeli airstrike.

The non-governmental organization said it served 200,000 meals to displaced Palestinians on Monday. The World Central Kitchen said it has provided nearly 43 million meals in Gaza to date.

Approximately "276 WCK trucks are ready to enter through Rafah with enough food for 8 million meals. We’re also sending trucks north," the NGO said in a statement.

Chef José Andrés, the founder and chief feeding officer of World Central Kitchen, wrote an op-ed in the Washington Post, published Tuesday, discussing his decision to resume operations and stressed that more aid is needed.

"We cannot stand by while so many people are so desperate for the essentials of life. Food is a universal human right, and we will not cease until those basic human rights are respected," Andrés wrote.

-ABC News' Will Gretsky

United Nations Secretary-General Antonio Guterres provided an update on the hunger situation in Gaza and said there has been " incremental progress recently" in preventing a famine.

However, Guterres warned there is still more work needed, "including the promised opening of the two crossing points between Israel and northern Gaza so that aid can be brought into Gaza from Ashdod, Port and Jordan are still obstacles including a lack of security for aid convoys."

"Humanitarian convoys, facilities and personnel and people in need must not be targets," he added.

Guterres said that civilians were dying from hunger and disease every day and pressed for a successful negotiation for a cease-fire.

"I strongly encourage the government of Israel and Hamas leadership to reach now an agreement. Without that I fear the war with all its consequences, both in Gaza and across the region, will worsen exponentially," he said.

-ABC News' Will Gretsky

Osama Hamdan, a senior Hamas official, said in a statement that cease-fire negotiations with Israel will cease if it moves forward with its operation into Rafah.

"The Israeli enemy is trying to blackmail everyone with the Battle of Rafah," he said in a statement.

Hamdan told Lebanese TV late Wednesday that a cease-fire deal had not been reached and Hamas was still "studying the swap deal proposal."

"We have substantial notes on the proposal," Hamdan told Lebanese TV.

"We are studying the proposal and we will respond to it in a way that serves our goals."

-ABC News' Dia Ostaz, Ellie Kaufman and Ghazi Balkiz