to Avi Shlaim, in March 1949 as the Iraqi forces withdrew and handed over their positions to the Jordanian legion, Israel carried out Operation Shin-Tav-Shin which allowed Israel to renegotiate the cease fire line in the Wadi Ara area of the northern West Bank in a secret agreement that was incorporated into the General Armistice Agreement. The Green Line was redrawn in blue ink on the southern map to give the impression that a movement in the green line had been made. Jewish population During the war in 1947–48, Jews residing east of what subsequently became the Line, including the Jewish Quarter of the Old City, were taken prisoner by the Jordanians. All but a few of the Gush Etzion defenders were massacred. The prisoners were returned to Israel after the war. On July 8, 1948, the Jewish inhabitants of Kfar Darom and Naharayim were evacuated by Israel due to military pressure by Egypt and Jordan. Israel also withdrew from villages in the Lebanese Upper Galilee, whereas Syria withdrew from Mishmar HaYarden. Since Israel's victory in the Six-Day War, Israel has established settlements south and east of the Line. These have been strongly criticised by other nations. Many Israelis believe that the settlements are important to Israel's security and also support the settlements ideologically. In contrast, many Israelis believe the settlements are an economic burden and a barrier to peace. From August to September 2005, Israel implemented a unilateral disengagement plan in which the entire Jewish population of the Gaza Strip was evacuated. In 2006, Ehud Olmert proposed a convergence plan that called for Israel to disengage, unilaterally, if necessary, from much of the West Bank (east of the line). Arab population 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. In the Six-Day War, Israel occupied territories beyond the Green Line that were inhabited