The UN Relief and Works Agency (UNRWA) sent its fourth humanitarian assistance mission to the Yarmouk camp for Palestinian and Syrian refugees in Syria, the agency said in a situation report. According to the agency, civilians at the camp are highly vulnerable, with more than 18,000 Palestinians and Syrians lacking basic humanitarian needs. More than 95 percent of Palestinian refugees rely on UNRWA to meet their needs of food, water and healthcare, the agency said, Sputnik reported.