Hospitals in Gaza are running low on fuel and aid, putting their ability to provide services at risk. The UN has warned that aid delivery to the war-devastated territory is being crippled. The health ministry in Gaza said that hospitals have only two days' fuel left before they must restrict services. The situation has worsened in northern Gaza, where Israeli security services said they had killed two commanders involved in an attack that triggered the war. The World Health Organization and the UN's humanitarian coordinator for the Palestinian territories have expressed grave concern for the worsening humanitarian conditions in Gaza.