Ahead of an expected ground offensive, the Israeli military has said in a statement that it will attack by land, air and sea, but gives no timings or specifics.
Israel has warned 1.1m Palestinians living in north Gaza to evacuate south, and thousands have been fleeing by vehicle or on food.
The UN’s aid agency told journalists that Gaza is “being pushed into an abyss”
The US has sent a second aircraft carrier to the region to “deter hostile actions against Israel”.
Meanwhile, Iran has warned of “far-reaching consequences” if Israel continues attacking Gaza.
And tension is rising on Israel’s northern border with Lebanon as well.
Three Hamas militants were killed after infiltrating Israel across that border
More than 1,300 people were killed in Israel last weekend when Hamas fighters crossed the border to attack civilians and soldiers
More than 2,300 people have been killed in Israel’s bombing campaign of the Gaza Strip launched in the aftermath, according to Palestinian authorities.