“The only way to reach a level of confidence is by having a sustained flow of aid over a period of time,” she said.

Israel said it would allow more food to enter Gaza and provide secure corridors for humanitarian aid. But U.N. officials say almost nothing has changed.

The hunger crisis in Gaza has many asking if Israel had a deliberate policy of starving civilians. Israelis say that was never the case, but an ignorance of Palestinian suffering allowed an inconsistent government policy to lead to a calamity.