Tension remained high on the Israel-Syria front, and during March 1974 the situation became increasingly unstable. The United States undertook a diplomatic initiative, which resulted in the signing of the "Agreement on Disengagement" (S/11302/Add.1, annexes I and II) between Israeli and Syrian forces. The Agreement provided for a buffer zone and for two equal areas of limitation of forces and armaments on both sides of the area. It also called for the establishment of a United Nations observer force to supervise its implementation. The Agreement was signed on 31 May 1974 and, on the same day, the UN Security Council adopted Resolution 350 to set up UNDOF.