Are Gaza residents able to evacuate ahead of expected Israeli ground invasion?

Israel has called for everyone in northern Gaza to evacuate to the south of the enclave, raising expectations of a ground invasion. A United Nations spokesperson told CBS News the world body “considers it impossible” to move more than 1 million people from the north of Gaza, adding the directive could not be fulfilled without “devastating humanitarian consequences.” CBS News foreign correspondent Imtiaz Tyab has more.
Source: CBS Minnesota