Purple Line (ceasefire line)

The hostilities, which stemmed from Syrian opposition to an Israeli drainage project in the demilitarized zone, ceased on 15 May, after intercession by the United Nations Security Council.

[citation needed] In June 1967 after battling Syria, Jordan and Egypt in the Six-Day War, Israel captured the entire length of the Golan Heights including its principal city Quneitra.

[1] The resulting ceasefire line (dubbed the "Purple Line" as it was drawn on the UN's maps)[citation needed] was supervised by a series of positions and observation posts manned by observers of the United Nations Truce Supervision Organization[2] and became the new effective border between Israel and Syria.

[citation needed] In a surprise attack consisting of a massive armored thrust, the Syrians crossed the Purple Line into the Golan Heights during the 1973 Yom Kippur War.

In the disengagements negotiations after the war, Israel and Syria agreed on 31 May 1974, to pull back their respective forces on the Golan Heights to the Purple Line.