The Palestinian United Nations envoy appealed to U.N. Secretary-General Antonio Guterres on Friday to do more to stop a “crime against humanity” by Israel, which has warned nearly half of the population of the Gaza Strip to relocate as it plans an assault.

“He has to do more. Whatever was done is not sufficient. We need all of us to do more to stop this crime against humanity,” Palestinian U.N. envoy Riyad Mansour told reporters before a meeting of Arab Group ambassadors at the United Nations.

Countries urged Israel on Friday to hold off attacking northern Gaza, where more than a million civilians largely defied Israel’s order to evacuate before it goes after Hamas militants who slaughtered Israeli civilians last weekend.

Reuters