An Israeli army self-propelled artillery howitzer fires rounds from a position near the border with the Gaza Strip in southern Israel on Dec. 7, 2023.

 Israel's military pushed ahead with its punishing air and ground offensive in Gaza on Saturday, bolstered by a U.S. veto derailing U.N. Security Council efforts to end the war and word that an emergency sale of $106 million worth of tank ammunition had been approved by Washington.

Unable to leave Gaza, a territory 25 miles (40 kilometers) long by about 7 miles (11 kilometers) wide, more than 2 million Palestinians faced more bombardment Saturday, even in areas that Israel had described as safe zones.