Aid trucks loaded with supplies for Gaza wait in Al-Arish City, Egypt, after the border closed on May 8. Ali Moustafa/Getty ImagesUnited Nations spokesperson Stephane Dujarric voiced alarm on Wednesday over the dire humanitarian situation in Gaza. In an operational update, he said that no goods for humanitarian operations have entered Gaza through key crossings, exacerbating challenges amid active hostilities.Dujarric emphasized the critical need for incoming supplies, including fuel, to sustain humanitarian efforts. The situation is urgent, with key medical facilities at risk of becoming…