In Gaza the UNWRA employees are Palestinians. 90% are Palestinians. You have a few UN types at the top from Norway and other neutral nations. So it is no surprise that UNWRA works against Israel.
I am not a fan of the United Nations Relief and Works Agency for Palestine Refugees or of any other pro-terrorist group. IDF needs to start treating them as terrorists or at least terrorist sympathizers, along with those who “find” rockets in schools and hand them over to Hamas. This is a battle between good and evil, and there is no good on the side of Hamas or those who support its terrorist actions.
Israel should level every building that has tunnels, including the main hospital, where the Hamas leaders are cowering. Give a 10 minute warning for residences and businesses, 30 minutes for schools, and longer for the hospitals, and then flatten them with ground-penetrating bunker busters. There is no reason to risk the lives of decent people to preserve buildings knowingly used by terrorists.