The only official numbers available are those Palestinian refugees registered for assistance with UNRWA, and those Palestinian refugees outside the areas of operation of UNRWA registered with UNHCR.8 Nonetheless, it is estimated that roughly 8.26 million Palestinians are forcibly displaced persons.9 Among them, approximately 7.54 million Palestinians are refugees and 615,000 are IDPs,10 forming the largest and longest-standing group of displaced persons today. Forcibly displaced Palestinians constitute around 66 percent of the entire, worldwide Palestinian population of over 12 million,11 and most Palestinian refugees still live within 100 km of the borders of Mandatory Palestine where their homes of origin are located, mainly in the occupied Palestinian territory (oPt) and in nearby Arab countries (Jordan, Syria and Lebanon).12 8 In 2016, 105,937 Palestinians were registered with UNHCR. See UNHCR, Population Statistics, available at: http://popstats.unhcr.org/en/overview [accessed 5 June 2018]. 9 BADIL, Survey 2013-2015, supra note 6, 32. 10 BADIL has estimated this number based on the number of Palestinian IDPs inside Israel and the number of IDPs in the oPt, which has been recently updated to include recent forcible transfer cases in the West Bank as well as to discount the thousands of internally displaced Palestinians in Gaza who have managed to return to their homes destroyed during the 2014 Israeli assault on Gaza. 11 BADIL, Survey 2013-2015, supra note 6, 32. 12 Id., 37. 14