Leslie gives her take on Israel ordering the entire population of northern Gaza to evacuate south, a warning that leaves more than 1 million people to decide whether to abandon their homes. Hamas urged Gazans to ignore it.

Israel's military said the order, which has raised fears of an imminent ground offensive on the densely populated enclave, was intended to minimize civilian casualties in the war against Hamas.

But the United Nations said it was "impossible" and risked a humanitarian disaster.

"We call on all civilians in Gaza City to move south," Israeli Defense Minister Yoav Gallant said Friday in a press conference with U.S. Defense Secretary Lloyd Austin in Tel Aviv.

"We don't want to harm them. Whoever wants to save his life should go south. Hamas is camouflaging itself inside the civilian population and we are going to go in and dismantle its infrastructure," Gallant said.

More than 1,530 Palestinians and 1,200 Israelis have been killed, thousands have been injured, and hundreds of thousands of others have been displaced since the latest fighting between Israel and Hamas began. Hamas is believed to be holding about 150 hostages in Gaza.