Israeli Prime Minister Benjamin Netanyahu visited Israeli infantrymen outside the Gaza Strip on Saturday, his office said in a statement, and an accompanying video showed him telling them: "You ready for the next stage? The next stage is coming."
He did not elaborate in the video, which showed the infantrymen nodding in response to his question.
The Israeli Defense Forces on Saturday issued a second warning to Gaza residents, urging them to evacuate to the southern part of the coastal enclave. The deadline expired at 4 p.m. local time.
Saturday marked the 8th day of the war between Hamas and Israel.
(With input from agencies)