CIA Director Bill Burns is expected to meet Qatari Prime Minister Mohammed Bin Abdul Rahman al-Thani, Mossad director David Barnea and Egyptian spy chief Abbas Kamel on Sunday, according to officials.

It’s the second evacuation order issued in a week that has included striking part of the humanitarian zone, a 60-square-kilometre (roughly 20-square-mile) blanketed with tent camps that lack sanitation and medical facilities and have limited access to aid, United Nations and humanitarian groups say. Israel expanded the zone in May to take in people fleeing Rafah, where more than half of Gaza’s population at the time had crowded.

According to Israeli estimates, about 1.8 million Palestinians are currently sheltering there after being uprooted multiple times in search of safety during Israel’s punishing air and ground campaign. In November, the military said the area could still be struck and that it was “not a safe zone, but it is a safer place than any other” in Gaza.