This is the situation Israel has been aiming for

These attacks have led UNRWA to declare that Gaza is currently the most dangerous place on Earth for aid workers, making it extremely difficult for groups to carry out the work necessary to stem the famine and various epidemics raging across Gaza — that is, when Israel even allows the materials needed for such efforts to cross the border.

• https://truthout.org/articles/israels-killing-of-aid-workers-may-force-un-to-suspend-gaza-operations/