This is not the first time Israel has starved the people of Gaza to death. After the Nakba, Gaza's population tripled almost overnight as roughly 200,000 refugees arrived from villages in what became the State of Israel.
Before organized aid arrived, refugees were living on less than 600 calories a day. By mid-December 1948, only about half of the refugees were receiving even a basic flour ration. Israel would not let them return to their homes and preferred to see them freeze or starve to death, offering no aid.
People starved to death. One survivor remembered, "In those first months, we ate boiled weeds, pieces of bread to feed 10 people, anything that could keep the children alive until the next morning."
Infants and children were the most vulnerable to the combination of malnutrition and exposure to the cold. Meanwhile, the lack of clean water and sanitation in the makeshift camps led to widespread disease, which, compounded by starvation, significantly increased the death rate.
In response to this deprivation UNRWA was established in 1949 specifically to provide food aid, including flour, lentils, and milk powder. Today Israel will not let it operate as it starves the people of Gaza again.