How can world powers stop Israel from attacking Gaza's medical facilities?

The United Nations says only 16 of the 36 hospitals in Gaza are functional and only able to offer partial services. It's verified more than 650 Israeli attacks on medical facilities since the war began in October 2023. At least 1,054 health workers have been killed. Israel says Hamas fighters are operating from hospitals, but provides little evidence to substantiate its claim. Is it possible to prevent the collapse of Gaza's health system?