The majority of Palestinian Arabs on the Israeli side of the Line fled or were expelled during the 1948 Arab-Israeli War (around 720,000). Those who remained became Israeli citizens and now comprise approximately 20% of Israel's total citizenry. The Umm al-Fahm–Baqa al-Gharbiyye–Tira area, known as the "Triangle," was originally designated to fall under Jordanian jurisdiction, but Israel insisted on having it within its side of the Green Line side due to military and strategic reasons. To achieve this, a territorial swap was negotiated, ceding to Jordan the Israeli territory in the southern hills of Hebron in exchange for the Triangle villages in Wadi Ara.