Israeli forces take control of the Gaza side of the Rafah border crossing with Egypt

An Israeli tank brigade seized control Tuesday of the Gaza Strip side of the Rafah border crossing with Egypt, authorities said, moving forward with an offensive in the southern city even as cease-fire negotiations with Hamas remain on a knife's edge.

The move comes after hours of whiplash in the Israel-Hamas war, with the militant group on Monday saying it accepted an Egyptian-Qatari mediated cease-fire proposal. Israel, meanwhile, insisted the deal did not meet its core demands. The high-stakes diplomatic moves and military brinkmanship left a glimmer of hope alive — but only barely — for an accord that could bring at least a pause in the 7-month-old war that has devastated the Gaza Strip.

The Israeli 401st Brigade entered the Rafah crossing early Tuesday morning, the Israeli military said, taking "operational control" of the crucial crossing. It's the main route for aid entering the besieged enclave and exit for those able to flee into Egypt. Israel fully controls all access in and out of Gaza since the war began.

Footage released by the Israeli military showed a tank entering the crossing. Details of the video matched known features of the crossing and showed Israeli flags flying from tanks that seized the area.

The Israeli military claimed it seized the crossing after receiving intelligence it was "being used for terrorist purposes." The military did not provide evidence to immediately support the assertion, though it alleged the area around the crossing had been used to launch a mortar attack that killed four Israeli troops and wounded others near the Kerem Shalom Crossing.

The military also said that ground troops and airstrikes targeted suspected Hamas positions in Rafah.

Wael Abu Omar, a spokesman for the Palestinian