RAFAH, Gaza Strip (AP) — The border crossing between Egypt and Gaza opened Saturday to let a trickle of desperately needed aid into the besieged Palestinian territory for the first time since Israel sealed it off and began pounding it with airstrikes following Hamas’ bloody rampage two weeks ago.

Just 20 trucks were allowed in, an amount aid workers said was insufficient to address the unprecedented humanitarian crisis. More than 200 trucks carrying 3,000 tons of aid have been waiting nearby for days.

Gaza’s 2.3 million Palestinians, half of whom have fled their homes, are rationing food and drinking dirty water. Hospitals say they are running low on medical supplies and fuel for emergency generators amid a territory-wide power blackout. Five hospitals have stopped functioning because of fuel shortages and bombing damage, the Hamas-run Health Ministry said.

There are growing expectations of a ground offensive that Israel says would be aimed at rooting out Hamas. Israel said Friday that it doesn’t plan to take long-term control over the small but densely populated Palestinian territory.

Israeli Prime Minister Benjamin Netanyahu convened his Cabinet late Saturday to discuss the expected invasion, Israeli media reported.

Israel’s military spokesman, Rear Adm. Daniel Hagari, said the country planned to step up its airstrikes starting Saturday as preparation for the next stage of the war.

“We will deepen our attacks to minimise the dangers to our forces in the next stages of the war. We are going to increase the attacks, from today,” Hagari said, repeating his call for Gaza City residents to head south for their safety.

Israel has vowed to crush Hamas but has given few details about what it envisions for Gaza if it succeeds.

Yifat Shasha-Biton, a Cabinet minister, said there was broad consensus in the government that there will have to be a “buffer zone” in Gaza to keep Palestinians away from the border.

“We need to create a distance between the border and our communities,” she told Channel 13 TV, adding that no decisions had been made on its size or other specifics.

The opening of Rafah came after more than a week of high-level diplomacy, including visits to the region by US President Joe Biden and United Nations Secretary-General Antonio Guterres. Israel had insisted nothing would enter Gaza until Hamas released all the captives from its October 7 attack on towns in southern Israel.

Late Friday, Hamas freed its first captives — an American woman and her teenage daughter. It was not immediately clear if there was a connection between the release and the aid deliveries. Israel says Hamas is still holding at least 210 hostages, though their conditions — and if they are even alive — remains unknown.

On Saturday morning, an Associated Press reporter saw the 20 trucks heading north from Rafah to Deir al-Balah, a quiet farming town where many evacuees from the north have sought shelter. Hundreds of foreign passport holders at Rafah hoping to escape the conflict were not allowed to leave.

American citizen Dina al- Khatib said she and her family were desperate to get out. “It’s not like previous wars,” she said. “There is no electricity, no water, no internet, nothing.”

The trucks were carrying 44,000 bottles of drinking water — enough for 22,000 people for a single day, it said. “This first, limited water will save lives, but the needs are immediate and immense,” said UNICEF Executive Director Catherine Russell.