Israel carried out a fifth day of bombardments across the Gaza Strip as the Palestinian territory lost electricity, following one of the deadliest attacks against Israel in history.
Many Israelis are frantically looking for clues about loved ones believed to be held in Gaza. Ido Dan keeps watching a video that appears to show Hamas militants kidnapping his 12-year-old nephew.
With high poverty and unemployment and severe restrictions on movement, life in the Gaza Strip was already difficult before Israel's retaliatory offensive began this week in response to Hamas attacks.
"Like every nation in the world, Israel has the right to respond — indeed has a duty to respond — to these vicious attacks," Biden said at the White House.
At a highway rest stop near where Hamas gunmen killed Israelis and took hostages, Israeli volunteers are helping rescue civilians and support soldiers who are being dispatched to the front lines.
The group, founded in 1987, has vowed to annihilate Israel. Before this past weekend's attack, it was responsible for many suicide bombings and other deadly attacks on civilians and Israeli soldiers.
Israel's airstrikes continue on Gaza after Hamas militants made a surprise attack along Israel's southern border. Scores of Israeli hostages are being held captive in Gaza.