You control and exclude them from 35% of their farmland, on pain of death. You bombed their only food processing plant. You pump out a majority of their aquifer. Yeah, if you need to, inspect everything and pay for the inspections, too. That is a cost of making war on somebody. Alternatively, you might consider ending the war started in 1967.
27 injured in fire, explosion at former air raid shelter in Hamburg, Germany (DPA)
from the article: Netanyahu to Gaza flotilla probe: IDF coordinated the deadly raid