No one was killed but the attack hit the Ahli Arab Hospital, a mainstay of Gaza’s decimated health care system. Separately, Israel said its troops had expanded their occupation of southern Gaza.

© Saher Alghorra for The New York Times

Hamas and President Trump have threatened to upend the cease-fire. Analysts say those words could prove hollow, but the deal still may not last beyond early March.

Hamas still controls most of the enclave, but Israel holds some key areas. International oversight could also be expanded, while the Palestinian Authority has presented itself as another alternative.

The release planned for Thursday would be the third so far as Israel and Hamas observe a six-week truce, part of a multiphase agreement that mediators hope will end the war in Gaza.

Soldiers disrupted a Jerusalem gathering to mark the early release of an imprisoned Palestinian, arresting his brother and roughing up his father. A Times reporter conducting interviews was also assaulted.

Bloodshed over the weekend highlighted the brittleness of the cease-fires in both places. Still, Israel, Hamas and Hezbollah each have reasons to postpone a new escalation, at least for a few weeks.

For nearly 16 months, hundreds of thousands of displaced Palestinians have lived in tents, barred from returning to northern Gaza. On Monday, Israel allowed them to walk back.

Israel and Hezbollah agreed to withdraw from southern Lebanon, but Israel says that Hezbollah hasn’t upheld its promise and that the Lebanese Army isn’t ready to fill the void.

Hamas identified four female soldiers abducted from a military base as those who will be freed in the next exchange for Palestinian prisoners held by Israel.

More than 30 hostages are set to be released during the cease-fire in Gaza. But many Israelis have mixed feelings about the deal because they feel it came at a high price.

Palestinians returning to parts of the enclave have been picking their way through vast piles of rubble and trying to salvage what they can.

After 470 days of death, a tentative cease-fire began on Sunday in Gaza. But Palestinians could not be sure that the war had ended, and Israelis fear that many hostages will still remain in Gaza.

An agreement offers Gazans at least some respite, and for Israelis it means the release of hostages. But the deal’s ambiguity leaves open the possibility that fighting could resume within weeks.

Surprised by Oct. 7 and fearful of another attack, Israel weakened safeguards meant to protect noncombatants, allowing officers to endanger up to 20 people in each airstrike. One of the deadliest bombardments of the 21st century followed.