Secretary of State Antony Blinken is set to meet leaders in the United Arab Emirates and Saudi Arabia on Monday, as part of a tour of the Middle East that will include a trip to Israel, aimed at preventing the war in Gaza from escalating. The World Health Organization said visits to central Gaza’s last functioning hospital, al-Aqsa, revealed “sickening scenes” of people being treated on blood-streaked floors amid “troubling reports” of nearby fighting and the forced evacuation of patients and workers.