Despite the focus on Khan Yunis, Rafah, surprisingly, emerges as a more intricate trap, as the conflict there poses significant challenges on multiple levels.
The IDF Southern Command say they are working on a plan to address the Philadelphi Corridor to prevent the rearmament of Hamas terrorists.
Until now, limited quantities of aid have been delivered from Egypt through the Rafah crossing, which is ill-equipped to process large numbers of trucks.
Under the plan presented by President Nikos Christodoulides at a humanitarian conference in Paris, aid would be sent by sea to Gaza from the Mediterranean island of Cyprus.
On Monday, the border authority said that no one who was not on one of the lists would be allowed through, citing Egyptian authorities.
One of the security sources and the medical source said the evacuations were suspended after an Israeli strike on Friday on an ambulance in Gaza being used to transport injured people.
Some of the Gazan workers returned through the Kerem Shalom crossing east of the Rafah border crossing between the Gaza Strip and Egypt, they said.
At least 320 foreign nationals and dozens of severely injured Gazans were among the first beneficiaries of the Qatari-mediated deal brokered between Egypt, Israel and Hamas.
At least 320 foreign passport holders crossed from Gaza to Egypt.
A logistics base at the Rafah border crossing that is vital to aid distribution has become harder to operate because 8,000 displaced people are sheltering at it.