On May 19, the Israeli army attacked the Nusayret refugee camp in the central Gaza Strip, killing 27 people. On the same day, Israeli Prime Minister Netanyahu met with visiting US President's National Security Advisor Sullivan. The two sides held talks on the Israeli military operation in Rafah, Gaza Strip, humanitarian aid to Gaza, the release of Israeli detainees, and the situation in Israel's northern border area.

According to Reuters on May 20, Sullivan met with Israeli Prime Minister Benjamin Netanyahu on May 19 and asked Israel to take more targeted military action in Gaza. The White House said before the meeting that Sullivan would urge Israel to stop its full-scale attack on Rafah and promote a ceasefire agreement.

Before the meeting on the 19th, an Israeli official revealed that Netanyahu will try to reach an agreement with Sullivan on the need to advance the Rafah operation, because Israel believes that up to a quarter of Hamas' armed forces are hiding in Rafah.

Israel has been advancing towards Rafah, which it considers to be the last stronghold of Hamas. Local residents told Reuters that Israeli troops also penetrated deep into Jabaliya in northern Gaza overnight.

According to CNN, on the 19th, the Israeli military detailed its ground operations against the Jabaliya refugee camp in northern Gaza. The offensive on Jabaliya is aimed at preventing Hamas' armed forces from rebuilding their power in the area. The Israeli army said it had launched dozens of attacks in the area to cooperate with the forces fighting against "armed terrorist organizations" on the ground.

The Palestinian News Agency said on the 19th that in the past 24 hours, the Israeli army's attacks in the Gaza Strip have killed at least 70 people and injured 110 people. The Israeli army attacked Gaza from the air and the ground at the same time, leaving fleeing civilians with no place to hide. The United Nations said a few days ago that 800,000 people have been forced to flee the southern city of Rafah in the Gaza Strip.

U.S. President Biden called for an "immediate ceasefire" in Gaza during a speech at Morehouse College in the United States on the 19th. "What is happening in Gaza and Israel is heartbreaking," Biden said. "This is a humanitarian crisis in Gaza."

Earlier, according to the Associated Press, a senior US government official revealed on the 7th local time that the US government has suspended the delivery of 3,500 bombs to Israel because of concerns that Israel will decide to launch a full-scale attack on Rafah regardless of the wishes of the United States.

On May 18, Benny Gantz, a centrist among the three members of Israel's wartime cabinet, threatened to resign from the government if the Netanyahu government did not adopt a new plan for the Gaza war within three weeks. Gantz gave a deadline of June 8. Gantz reportedly proposed a six-point plan, including the release of detainees, the end of Hamas's rule, the demilitarization of the Gaza Strip, and the establishment of an international civil administration with the cooperation of the United States, Europe, Arab countries and Palestine. The plan also supports Israel's efforts to normalize relations with Saudi Arabia and extends the obligation to serve in the military to all Israelis.

Netanyahu responded in a statement that Gantz chose to deliver the ultimatum to his own prime minister rather than to Hamas, and said his conditions amounted to a "euphemism" that Israel had failed.