The United States confirmed it had restocked Israel’s supplies of ammunition, hours after finally sharpening its tone to condemn an attack on a United Nations school in Gaza.

But while both the White House and the State Department condemned the shelling of the UN-run school in the Jabaliya refugee camp in northern Gaza in which at least 16 Palestinians were killed, neither would assign blame to staunch US ally Israel.

“Obviously nothing justifies the killing of innocent civilians seeking shelter in a UN facility,” deputy State Department spokeswoman Marie Harf acknowledged, in some of the toughest US comments since the start of the 23-day fighting in the Gaza Strip. […]