The Israeli military requested the addition ammunition on 20 July . The US defense department approved the sale three days later, Kirby said.
Two of the requested munitions were sourced from a secret stockpile the US keeps in Israel for emergencies. White House approval was not required to release the weaponry War Reserve Stockpile Ammunition-Israel (WRSA-I), Kirby added.
He did not say whether the White House was involved in the decision to supply the other ammunition apparently requested by the Israelis.
The provision of ammunition could prove controversial for Washington, which has expresssed growing concern about the deaths Palestinian civilians while maintaining support for its close ally.
In Congress, both Democrats and Republicans were working on a package of additional military support for Israel’s “iron dome” security system.
Israel’s decision to press ahead with its offensive in Gaza despite a chorus of international condemnation was reaffirmed on Wednesday, following a meeting of the Israeli cabinet.
UNRWA said it was the sixth time one of its schools had been struck. “Last night, children were killed as they slept next to their parents on the floor of a classroom in a UN-designated shelter in Gaza. Children killed in their sleep; this is an affront to all of us, a source of universal shame,” said Pierre Krahenbuhl, commissioner-general.